chore: generate

2026-07-03 04:49:44 +00:00
parent cb93114424
commit 83c638eaac
20 changed files with 2137 additions and 1207 deletions
@@ -8,11 +8,11 @@ The package is currently private to this workspace. Its API is designed around t
 ```ts
 // One execution
-yield* CodeMode.execute({ tools, code })
+yield * CodeMode.execute({ tools, code })
 // A reusable runtime
 const runtime = CodeMode.make({ tools, limits })
-yield* runtime.execute(code)
+yield * runtime.execute(code)
 // One agent-facing code tool
 const codeTool = runtime.agentTool()
@@ -55,7 +55,9 @@ const runtime = CodeMode.make({
  },
 })
-const result = yield* runtime.execute(`
+const result =
  yield *
  runtime.execute(`
  const order = await tools.orders.lookup({ id: "order_42" })
  return { id: order.id, needsAttention: order.status !== "complete" }
 `)
@@ -89,13 +91,15 @@ The description and schemas are part of the model-visible tool contract. Keep de
 Use `CodeMode.execute` for a single execution:
 ```ts
-const result = yield* CodeMode.execute({
+const result =
  yield *
  CodeMode.execute({
    tools: { orders: { lookup: lookupOrder } },
    code: `return await tools.orders.lookup({ id: "order_42" })`,
    limits: { maxToolCalls: 10 },
    onToolCallStart: (call) => Effect.logDebug("CodeMode tool started", call),
    onToolCallEnd: (call) => Effect.logDebug("CodeMode tool settled", call),
-})
+  })
 ```
 The Effect environment is inferred from the supplied tools. CodeMode does not erase service requirements introduced by tool implementations.
@@ -223,7 +227,7 @@ CodeMode is an orchestration language, not a general JavaScript runtime.
 The limits are exactly three knobs:
 | Limit            |              Default | Bounds                                                               |
-| --- | ---: | --- |
+| ---------------- | -------------------: | -------------------------------------------------------------------- |
 | `timeoutMs`      |    none — no timeout | Wall-clock execution time.                                           |
 | `maxToolCalls`   |     none — unlimited | Tool calls admitted during the execution.                            |
 | `maxOutputBytes` | none — no truncation | Model-facing output: the serialized result value plus captured logs. |
@@ -255,7 +259,7 @@ Two interpreter internals are fixed constants rather than knobs: at most 8 tool
 Failures are data:
 | Kind                    | Meaning                                                                                                  |
-| --- | --- |
+| ----------------------- | -------------------------------------------------------------------------------------------------------- |
 | `ParseError`            | Source is empty or cannot be parsed.                                                                     |
 | `UnsupportedSyntax`     | Parsed JavaScript is outside the supported subset.                                                       |
 | `UnknownTool`           | A program referenced a tool the host did not provide.                                                    |
@@ -272,10 +276,7 @@ Unknown host failures, defects, invalid outputs, and copying failures are saniti
 ```ts
 import { toolError } from "@opencode-ai/codemode"
-run: ({ id }) =>
+run: ({ id }) => (authorized(id) ? loadOrder(id) : Effect.fail(toolError("Order is unavailable")))
  authorized(id)
    ? loadOrder(id)
    : Effect.fail(toolError("Order is unavailable"))
 ```
 Only the supplied message is model-visible. The optional cause is never returned in `ExecuteResult`; hosts should perform any required internal logging before crossing this boundary.
@@ -39,6 +39,7 @@ package and was **deleted** in Wave 3 (done, see below).
 From issue #34787 and design discussion. Do not relitigate these casually.
 ### Core direction
 - Generic CodeMode lives in its own package: `@opencode-ai/codemode` (repo scope convention;
  the issue's `@opencode/codemode` name was normalized to the `@opencode-ai/*` convention).
 - **Keep the hand-rolled interpreter.** No QuickJS/V8/sandbox-engine dependency. We own and
@@ -52,6 +53,7 @@ From issue #34787 and design discussion. Do not relitigate these casually.
  products/blog posts) in code, comments, commit messages, or docs in this repo.
 ### MCP / tools
 - The MCP adapter lives in OpenCode, not here. It converts MCP definitions into ordinary
  `Tool.make(...)` definitions and hands CodeMode a plain tool tree.
 - Permissions stay in the OpenCode adapter (each tool's `run` wraps the permission ask).
@@ -61,8 +63,9 @@ From issue #34787 and design discussion. Do not relitigate these casually.
  `tools.<server>.<tool>` namespaces before handing them over.
 ### Discovery / search
 - **Search only — no separate `describe`.** `tools.$codemode.search({ query?, namespace?,
-  limit? })` over the final tool tree, owned by this package.
+limit? })` over the final tool tree, owned by this package.
 - Search result item shape: `{ path, description, signature }` in an `{ items, total }`
  wrapper. The `signature` string embeds the full input/output TypeScript types — in search
  results it is the pretty, JSDoc-annotated multiline form (Fix 7), so per-field schema
@@ -82,6 +85,7 @@ From issue #34787 and design discussion. Do not relitigate these casually.
 - Tools without an output schema render `unknown` as their return type.
 ### Schemas / Tool.make
 - `Tool.make` carries rich metadata so search can render real signatures.
 - Support **Effect Schema** (first-class, validating) and **JSON Schema** (initially
  render-only — used for TypeScript rendering; the adapter may validate on its own). Leave
@@ -90,6 +94,7 @@ From issue #34787 and design discussion. Do not relitigate these casually.
  normalization for plugin authors can come later.
 ### Attachments / output
 - **No `output.text/file/image` API in v1.** (Deleted in Wave 2.)
 - Tool calls return native structured payloads into the sandbox. Files/images emitted by
  child tools **never enter the sandbox** — the OpenCode adapter strips and accumulates them
@@ -100,6 +105,7 @@ From issue #34787 and design discussion. Do not relitigate these casually.
  image bytes into context or drop attachments.
 ### Runtime behavior
 - Limits are EXACTLY the three public knobs: `{ timeoutMs, maxToolCalls, maxOutputBytes }` —
  matching the original locked spec exactly. NO limit has a default (user direction, Fix 6
  for the first two; extended to `maxOutputBytes` in the truncation-layering fix below):
@@ -129,7 +135,7 @@ From issue #34787 and design discussion. Do not relitigate these casually.
 - `console.*` is captured into `logs` on the result; the host appends them to model-facing
  output. Not a tool call; costs no tool budget.
 - Simple tool-call **start/end hooks** for nested progress: `onToolCallStart({ index, name,
-  input })` and `onToolCallEnd({ index, name, input, durationMs, outcome, message? })`.
+input })` and `onToolCallEnd({ index, name, input, durationMs, outcome, message? })`.
  Interrupted calls fire no end event. No `CurrentToolCall` context service (removed in
  Wave 2).
@@ -148,8 +154,9 @@ and `bun run typecheck`; from `packages/opencode`, `bun run typecheck` and
 `test/tool/registry.test.ts`).
 ### Wave 0 — scaffold (done)
 - `packages/codemode` created from the experiments implementation: `src/{index,codemode,tool,
-  tool-error,tool-runtime}.ts`, README, AGENTS.md, tests.
+tool-error,tool-runtime}.ts`, README, AGENTS.md, tests.
 - `package.json`: name `@opencode-ai/codemode`, deps `acorn@8.15.0`, `typescript: catalog:`,
  `effect: catalog:` (both repos pin effect `4.0.0-beta.83`; opencode's effect patch only
  touches `unstable/httpapi`, which this package doesn't use).
@@ -157,6 +164,7 @@ and `bun run typecheck`; from `packages/opencode`, `bun run typecheck` and
  Context.Service key string renamed to `@opencode-ai/codemode/CurrentToolCall`.
 ### Wave 1a — forgiving JS semantics (done)
 Ported from the old opencode rune work; `test/parity.test.ts` (24 tests) is the acceptance
 spec. The seeded interpreter was deliberately strict; these behaviors replaced that:
@@ -173,6 +181,7 @@ spec. The seeded interpreter was deliberately strict; these behaviors replaced t
  null/undefined still throws (real JS throws too).
 ### Wave 1b-i — stdlib value types: Date, RegExp, Map, Set (done)
 `src/values.ts` holds `SandboxDate/SandboxRegExp/SandboxMap/SandboxSet` (own module so both
 `codemode.ts` and `tool-runtime.ts` import without a cycle). Design:
@@ -202,13 +211,14 @@ spec. The seeded interpreter was deliberately strict; these behaviors replaced t
  interpolation renders `/regex/` and ISO dates directly.
 ### Wave 2 — API layer (done)
 The package's public contract, reshaped for the Wave 3 adapter. 101 tests / 0 fail after this
 wave; both packages typecheck clean.
 - **`Tool.make` schema flexibility** (`src/tool.ts`): `input`/`output` each accept an Effect
  Schema (validating, decoded both directions as before) OR a raw JSON Schema document
  (render-only — no validation, values pass through; rendering handles `$defs`/`definitions`
-  + `$ref`). `output` is **optional** → signature renders `Promise<unknown>` and the host
+  - `$ref`). `output` is **optional** → signature renders `Promise<unknown>` and the host
    result is exposed as-is. Discrimination via `Schema.isSchema`. New helpers exported from
    `tool.ts`: `inputTypeScript`/`outputTypeScript`/`decodeInput`/`decodeOutput`/
    `jsonSchemaToTypeScript`; `tool-runtime.ts` consumes them (no direct `Schema.*` use there
@@ -228,14 +238,14 @@ wave; both packages typecheck clean.
  (`ToolError`/`ToolRuntimeError` message, else "Tool execution failed"). Interrupted calls
  fire no end event (timeout kills the whole execution anyway).
 - **Limits collapse**: public `ExecutionLimits` = `{ timeoutMs?, maxToolCalls?,
-  maxOutputBytes? }` (defaults 10_000 / 100 / 32_000). This wave kept the other knobs as
+maxOutputBytes? }` (defaults 10_000 / 100 / 32_000). This wave kept the other knobs as
  internal defaults reachable through an `@internal` `InternalExecutionLimits` type; Fix 5
  later deleted that type and the internal limit system entirely.
 - **`maxOutputBytes` truncation** (CodeMode-owned, never fails): applied via `boundOutput` in
  a final `Effect.map` over every result path (success/timeout/normalized failure). Oversized
  serialized values become truncated text + ` [result truncated: N bytes exceeds the M-byte
-  output limit; return a smaller value]`; logs keep leading lines within the remaining budget
+output limit; return a smaller value]`; logs keep leading lines within the remaining budget
-  + `[logs truncated: showing K of N lines]`; result gains `truncated: true` (also added to
+  - `[logs truncated: showing K of N lines]`; result gains `truncated: true` (also added to
    `ExecuteResultSchema`). UTF-8-safe truncation (no split code points). (The in-sandbox
    `maxDataBytes` check that used to throw first on oversized raw values died in Fix 5 —
    truncation is now the only result-size mechanism.)
@@ -244,6 +254,7 @@ wave; both packages typecheck clean.
  (`total: 1`), bypassing ranking. Tokenization/ranking/shape unchanged.
 ### Wave 3 — OpenCode MCP adapter (done)
 `packages/opencode/src/session/code-mode.ts` rewritten as a thin adapter over this package;
 the vendored rune interpreter is gone. Same `define(mcpTools, mcpDefs, servers)` signature, so
 `tools.ts` gating (flag on + MCP tools exist → single `execute` tool, early-return suppresses
@@ -257,7 +268,7 @@ per-MCP registration; MCP resource tools unaffected) is unchanged.
  invoked) — so signature rendering, the inline-vs-search switch, and `$codemode.search`
  availability all come from this package and stay consistent with execution.
 - **`run` path**: per-child permission ask first (`ctx.ask({ permission: entry.key, patterns:
-  ["*"], always: ["*"] })`, exactly the old gating; approving `execute` approves no child).
+["*"], always: ["*"] })`, exactly the old gating; approving `execute` approves no child).
  Denials and host failures are mapped to `toolError(message)` so they surface as safe,
  catchable in-program failures (MCP `isError` text propagates as `e.message`; without this
  they'd be sanitized to "Tool execution failed"). Dispatch reuses the ai-sdk wrapper from
@@ -270,7 +281,7 @@ per-MCP registration; MCP resource tools unaffected) is unchanged.
  No handles, no `Result<T>` envelope, no base64 in the sandbox, no data-size tuning (the
  `maxDataBytes` budget that existed at the time was deleted in Fix 5).
 - **Execute result**: `{ output: formatValue(value) + trailing "Logs:" section (success AND
-  error — logs are plain pre-formatted lines now), attachments: accumulated }` through the
+error — logs are plain pre-formatted lines now), attachments: accumulated }` through the
  existing `Tool.ExecuteResult.attachments` → `message-v2.ts` vision plumbing; attachments
  ride on both success and error results. Diagnostic `suggestions` not already contained in
  the message are appended to error output. Native outer truncation stays on (adapter never
@@ -296,6 +307,7 @@ per-MCP registration; MCP resource tools unaffected) is unchanged.
  describe/`renderType`/`rankTools` tests died with the old design (58+17+24 → 34+16).
 ### Wave 4 — instructions/prompting + polish (done)
 Instructions are now the budgeted-catalog + prompting-guidance form; verified e2e against a
 real MCP config. Package still 101 tests / 0 fail; opencode adapter suites still 34 + 16; both
 packages typecheck clean.
@@ -321,7 +333,7 @@ packages typecheck clean.
  exported); `CodeMode.execute` (one-shot) passes it too, preserving the
  `execute`≡`make().execute` law. A speculative `tools.$codemode.search` call on a small
  catalog now succeeds instead of `UnknownTool`, and unknown-tool suggestions always point at
-  search. Search is *advertised* in the instructions only when the inlined list is PARTIAL,
+  search. Search is _advertised_ in the instructions only when the inlined list is PARTIAL,
  keeping small-catalog instructions tight.
 - **Prompting content** in `instructions()`, mapping 1:1 to the §5 transcript failures:
  parse-string-results-as-JSON, return-small, console-for-intermediates, and
@@ -340,7 +352,7 @@ packages typecheck clean.
 - **E2E (verified, headless)**: from the repo root with `OPENCODE_EXPERIMENTAL_CODE_MODE=1`,
  the scratch `.opencode/opencode.jsonc` (context7, github, playwright, sentry, memory,
  sequential-thinking; left uncommitted/as-is), and `bun packages/opencode/src/index.ts run
-  --dangerously-skip-permissions -m opencode/claude-sonnet-4-5 "..."`. Confirmed: a single
+--dangerously-skip-permissions -m opencode/claude-sonnet-4-5 "..."`. Confirmed: a single
  `execute` tool registered alongside core tools (per-MCP registration suppressed; MCP
  resource tools unaffected); the live description read back as "Available tools (PARTIAL —
  56 of 88 shown; find the rest with tools.$codemode.search):" with correct per-namespace
@@ -352,6 +364,7 @@ packages typecheck clean.
  images, output truncation.
 ### Wave 5 — Promise generalization (done)
 First-class promise values in the interpreter; the direct-tool-call-only `Promise.all`
 restriction (and its bespoke AST checks) is gone. Package suite is 136 tests / 0 fail (35 new
 in `test/promise.test.ts`); adapter suites and both typechecks unchanged/green; the opencode
@@ -495,7 +508,7 @@ adapter needed **no changes**.
    `tools.*`." (the second line drops the tools clause when the tree is empty).
  - **`## Workflow`**: numbered steps — find a tool via `tools.$codemode.search` → read
    the `{ path, description, signature }` matches → call by path → `typeof res ===
-    "string" ? JSON.parse(res) : res` → return only the needed fields. When the catalog is
+"string" ? JSON.parse(res) : res` → return only the needed fields. When the catalog is
    COMPLETE the search/read steps collapse into "Pick a tool from the list under
    `## Available tools`" and the steps renumber (4 instead of 5).
  - **`## Rules`**: call-by-exact-path; TEXT-is-JSON → JSON.parse; return small (never raw
@@ -526,16 +539,17 @@ adapter needed **no changes**.
 **Fix 4 — token-budgeted catalog (was bytes)** (user direction: signatures need a token
 budget; namespaces must always be present):
-  - `src/token.ts` added: copy of `@opencode-ai/core/util/token` (`round(chars / 4)`), so
+
 - `src/token.ts` added: copy of `@opencode-ai/core/util/token` (`round(chars / 4)`), so
  the package stays dependency-free; keep in sync if the core heuristic changes.
-  - `DiscoveryOptions.maxInlineCatalogBytes` → `maxInlineCatalogTokens` (default 4,000
+- `DiscoveryOptions.maxInlineCatalogBytes` → `maxInlineCatalogTokens` (default 4,000
  estimated tokens ≈ the old 16,000 bytes at 4 chars/token — behavior parity, not a size
  reduction). `discoveryPlan` charges `estimate(catalogLine(tool))` per line; cheapest-first
-    + stop-on-first-miss unchanged at the time (stop-on-first-miss replaced by round-robin in
+  - stop-on-first-miss unchanged at the time (stop-on-first-miss replaced by round-robin in
    Fix 8). Namespace stub lines were and remain unbudgeted — every
    namespace always appears with its tool count, even at budget 0 (asserted in package and
    adapter tests).
-  - Ripple: chars/4 rounding erases small line-length differences, so equal-cost lines fall
+- Ripple: chars/4 rounding erases small line-length differences, so equal-cost lines fall
  to the lexicographic path tiebreak; the adapter's PARTIAL test now asserts the
  lexicographic tail (`op_99`) is excluded instead of `op_149`. Fixed-prose measurements
  (2026-07): preamble ~44 + Workflow ~146 + Rules ~362 + Syntax ~453 ≈ 1,100 tokens fixed;
@@ -543,13 +557,14 @@ budget; namespaces must always be present):
 **Fix 5 — internal limits removed** (user direction: only the three PUBLIC limits survive as
 configurable knobs; the internal limit system dies):
-  - `ExecutionLimits` (`timeoutMs` 10_000 / `maxToolCalls` 100 / `maxOutputBytes` 32_000 at
+
 - `ExecutionLimits` (`timeoutMs` 10_000 / `maxToolCalls` 100 / `maxOutputBytes` 32_000 at
  the time; Fix 6 later removed the first two defaults. Same validation: safe integers,
  timeoutMs >= 1, others >= 0, RangeError otherwise) is now
  the ENTIRE limit surface — exactly the shape §2's original locked spec named.
  `ResolvedExecutionLimits` shrank to those three fields; the `@internal`
  `InternalExecutionLimits` type is deleted.
-  - **Deleted outright**: `maxOperations` and the whole operation-budget machinery
+- **Deleted outright**: `maxOperations` and the whole operation-budget machinery
  (`recordWork`/`recordOperation`/`budget.operations`, plus the `workUnits`/
  `cheapArrayMethods` cost helpers); `maxSourceBytes` (the pre-parse source-size check);
  `maxDataBytes` (every byte-accounting path: `runtimeValueBytes`, `boundedProgramValue`,
@@ -561,29 +576,29 @@ configurable knobs; the internal limit system dies):
  actively harmful: an MCP tool returning 20k rows failed). The `OperationLimitExceeded`
  and `AuditLimitExceeded` diagnostic kinds are gone from the `DiagnosticKind` union and
  `ExecuteResultSchema` (fine — the package is unreleased).
-  - **Fixed constants, not knobs**: `TOOL_CALL_CONCURRENCY = 8` (codemode.ts; the fork
+- **Fixed constants, not knobs**: `TOOL_CALL_CONCURRENCY = 8` (codemode.ts; the fork
  semaphore) and `MAX_VALUE_DEPTH = 32` (tool-runtime.ts; the `copyIn` depth check — kept
  only because it produces a clearer error than a native stack-overflow RangeError; still
  `InvalidDataValue`). The `DataLimits` plumbing through `tool-runtime.ts` is gone —
  `copyIn(value, label)` needs no limits argument, and `ToolRuntime.make` takes just
  `(tools, maxToolCalls, hooks?, searchIndex?)`.
-  - **Verified fact**: timeout interruption does NOT depend on the operation budget — the
+- **Verified fact**: timeout interruption does NOT depend on the operation budget — the
  Effect fiber runtime auto-yields between interpreter steps, so `timeoutMs` interrupts
  even a pure `while (true) {}` loop (empirically verified: a 200ms timeout fired at
  ~225ms with maxOperations set to MAX_SAFE_INTEGER before the deletion). A regression
  test in `codemode.test.ts` asserts exactly this (`while(true){}` + `timeoutMs: 200` →
  `TimeoutExceeded`, elapsed well under a few seconds).
-  - **Kept (correctness, not budgets)**: circular detection (`copyIn` walks +
+- **Kept (correctness, not budgets)**: circular detection (`copyIn` walks +
  `rejectCircularInsertion` on mutations), plain-objects-only, blocked properties
  (`__proto__`/`constructor`/`prototype`), data-only checks, and all three public-limit
  behaviors unchanged.
-  - Behavior deltas beyond the intended kills: in-sandbox structures deeper than 32 levels
+- Behavior deltas beyond the intended kills: in-sandbox structures deeper than 32 levels
  now fail at the data boundary (`copyIn`) instead of at construction; array index
  assignment allows any non-negative integer index (holes permitted, message now "must be
  a non-negative integer"); interpreter-produced deep/hostile structures that overflow the
  native stack during a walk still normalize to the existing "Execution exceeded the
  maximum nesting depth." data diagnostic — failures remain data everywhere.
-  - Tests: deleted the knob-only tests (stdlib Map/Set collection-length growth ×2,
+- Tests: deleted the knob-only tests (stdlib Map/Set collection-length growth ×2,
  enumeration operation-budget, codemode maxDataBytes/maxSourceBytes/maxOperations/
  maxConcurrency-RangeError assertions, and the adapter's runaway-loop-via-operation-limit
  test — superseded by the package timeout regression test); rewrote the helpers that used
@@ -639,7 +654,8 @@ adapter suites: 34 + 16.
 **Fix 8 — condensed instructions + round-robin catalog fairness + plural-aware search**
 (user direction: the fixed instruction prose was too verbose; two discovery fixes ride
 along). All in `tool-runtime.ts`; no interpreter changes.
-  - **Syntax section inverted**: the three dense allowlist lines (~453 estimated tokens)
+
 - **Syntax section inverted**: the three dense allowlist lines (~453 estimated tokens)
  are replaced by four short lines (~188) built on "models already know JavaScript; name
  only what is unusual or missing": (1) standard modern JS works — functions/closures,
  destructuring, template literals, loops, try/catch, spread, optional chaining, the
@@ -656,11 +672,11 @@ along). All in `tool-runtime.ts`; no interpreter changes.
  interfaces/type aliases are stripped and TS **enums actually work** (transpileModule
  compiles them to an IIFE the interpreter runs), hence enums deliberately unmentioned.
  `supportedSyntaxMessage` (the in-diagnostic text in `codemode.ts`) is untouched.
-  - **Workflow/Rules deduped**: the call-by-exact-path, JSON.parse-string-results, and
+- **Workflow/Rules deduped**: the call-by-exact-path, JSON.parse-string-results, and
  return-small content now lives ONLY in the numbered Workflow steps (with their
  compliance-driving justifications inline: "most tools return JSON as a string", "raw
  payloads get truncated and waste context"); Rules keeps only bullets adding new
-    content — filter/aggregate collections in code, console.* intermediates (logs ride
+  content — filter/aggregate collections in code, console.\* intermediates (logs ride
  back), Promise.all parallelism, Object.keys/for...in enumeration, browse-namespace
  (PARTIAL only), and the media rule compressed to one line. The no-.then/.catch
  guidance moved to the Syntax not-supported line. Content upgrades: the PARTIAL search
@@ -668,13 +684,13 @@ along). All in `tool-runtime.ts`; no interpreter changes.
  clearly-a-query-string example, not a tool name), and the exact-path guidance is now
  "call it with the result's `path` as-is (never guess segments)" / COMPLETE: "use it
  as-is rather than guessing segments".
-  - **Fixed-prose measurements** (instructions split on `"\n## "`, catalog budget 0,
+- **Fixed-prose measurements** (instructions split on `"\n## "`, catalog budget 0,
  bytes/3.7 — same method as Fix 4; chars/4 in parentheses):
  preamble 44 → 44 (41 → 41), Workflow 146 → 187 (135 → 171), Rules 362 → 191
  (332 → 176), Syntax 453 → 188 (419 → 174); fixed prose total 1,005 → 610 (927 → 562),
  ≈ 40% reduction with no behavioral content dropped. Workflow grew slightly because it
  absorbed the deduped parse/return-small justifications.
-  - **Round-robin namespace inlining** (`discoveryPlan`): the ported stop-on-first-miss
+- **Round-robin namespace inlining** (`discoveryPlan`): the ported stop-on-first-miss
  behavior (alphabetically-late namespaces starved to "none shown" while an early
  namespace inlines everything) is replaced by round-robin fairness — in each round
  (namespaces alphabetical), every namespace still holding un-inlined tools attempts to
@@ -685,14 +701,14 @@ along). All in `tool-runtime.ts`; no interpreter changes.
  `(N tools)`/`(N tools, K shown)`/`(N tools, none shown)` labels, COMPLETE vs PARTIAL
  header, alphabetical namespace order in the output, cheapest-first within each
  namespace's shown set.
-  - **Plural/singular search fix**: `tokenize`d terms matched one-directionally (term must
+- **Plural/singular search fix**: `tokenize`d terms matched one-directionally (term must
  be substring of indexed text), so query "issues" missed a tool whose text only says
  "issue". Now each term expands to `termForms` — the term plus naive singular variants
  (trailing "es" stripped when length > 3, trailing "s" when length > 2) — and each of
  the four field checks passes when ANY form matches. Weights, exact-path lookup, and
  namespace scoping untouched. A true plural path match still outranks a singular-only
  description match (path substring 8 + searchable 2 > description 4 + searchable 2).
-  - **Tests**: package instruction/structure assertions updated to the new text; new
+- **Tests**: package instruction/structure assertions updated to the new text; new
  syntax-section test (leads with "Standard modern JavaScript works", names the
  verified not-supported list, keeps the data-boundary note); the budget-exhaustion
  test rewritten to assert the new fairness (alpha.expensive not fitting must NOT
@@ -707,25 +723,27 @@ along). All in `tool-runtime.ts`; no interpreter changes.
 **Fix 9 — prompting trims per user review of Fix 8** (user reviewed the condensed
 instructions and directed further cuts):
-  - Default `maxInlineCatalogTokens` 4,000 → **2,000** (user wants ~2k tokens of signatures
+
 - Default `maxInlineCatalogTokens` 4,000 → **2,000** (user wants ~2k tokens of signatures
  auto-inlined; round-robin fairness from Fix 8 spreads it across all namespaces).
-  - Console rule and files/images rule DROPPED from `## Rules`. Replaced by a single
+- Console rule and files/images rule DROPPED from `## Rules`. Replaced by a single
  `unknown`-treatment warning: "A result typed `Promise<unknown>` has no guaranteed
  shape — verify what actually came back before relying on its fields." (Deliberately
  does NOT suggest console.log — user review: naming it there nudges models to log AND
  return the same data; the prompt stays console-neutral, neither for nor against.)
  The media-stripping MECHANISM is unchanged and still tested; only the prose about it
  is gone — the `[N images attached]` marker is self-explanatory in context.
-  - Kept as-is per user: the JSON.parse workflow step (maps to the original motivating
+- Kept as-is per user: the JSON.parse workflow step (maps to the original motivating
  transcript failure; NOT copied from prior art — see §5 note), the browse-namespace rule
  (undecided), no no-fetch/ambient-authority rule added (proposed, not approved).
-  - Explicitly REJECTED for now: auto-parsing JSON-looking text results at the adapter
+- Explicitly REJECTED for now: auto-parsing JSON-looking text results at the adapter
  boundary ("could get weird" — type flips, program-sees vs tool-sent divergence). Logged
  as a next-iteration follow-up below.
 **DSL-expansion pass — interpreter-surface batch from §4** (the deferred medium-tier JS
 parity items, done as one focused pass; no public API or limit changes):
-  - **`instanceof` + real Error values**: the `errorConstructors` names (`Error`,
+
 - **`instanceof` + real Error values**: the `errorConstructors` names (`Error`,
  `TypeError`, `RangeError`, `SyntaxError`, `ReferenceError`, `EvalError`, `URIError`) are
  bound globals (`ErrorConstructorReference`, callable with or without `new`; `typeof` →
  `"function"`). Error values stay the same plain `{ name, message }` null-prototype
@@ -752,25 +770,25 @@ parity items, done as one focused pass; no public API or limit changes):
  `Array`, `Object` (any object/function-ish value), `Promise` (`SandboxPromise`), and
  `Number`/`String`/`Boolean` (always false — no boxed values exist); anything else is a
  catchable error naming the recognized constructors.
-  - **Array methods**: `splice` (mutating, returns the removed elements; insertions run
+- **Array methods**: `splice` (mutating, returns the removed elements; insertions run
  `rejectCircularInsertion` like push/unshift; one-arg form removes to the end, undefined
  delete count removes nothing), `fill` (circular-checked value) and `copyWithin`
  (host-delegated), and `keys`/`values`/`entries` returning **arrays** (the Map/Set
  convention — for...of and spread work either way). The `retryableArrayMethods`
  "rewrite using map/filter" hint set emptied out and was deleted with its branch; unknown
  array properties still read `undefined`.
-  - **String methods**: `localeCompare(that)` (locale/options arguments ignored — host
+- **String methods**: `localeCompare(that)` (locale/options arguments ignored — host
  default locale; the dominant use is a sort comparator), `normalize(form?)` (invalid form
  → catchable error naming the four valid forms), `trimLeft`/`trimRight` as
  trimStart/trimEnd aliases.
-  - **Actionable regex failures**: `toHostRegex` and `constructRegExp` now show the
+- **Actionable regex failures**: `toHostRegex` and `constructRegExp` now show the
  offending pattern (or flags) plus the engine reason (deduped "Invalid regular
  expression:" prefix via `regexFailureReason`) and a shared escaping hint
  (`escapeRegexHint`); flags failures list the valid flag letters; the
  replaceAll/matchAll missing-`g` errors spell out the exact `/pattern/g` to write and
  the single-match alternative.
-  - **copyIn split (the important one)**: `copyIn(value, label, preserveSandboxValues =
+- **copyIn split (the important one)**: `copyIn(value, label, preserveSandboxValues =
-    false)` — recursion moved to a private `copyBounded`; `boundedData` (every intra-sandbox
+false)` — recursion moved to a private `copyBounded`; `boundedData` (every intra-sandbox
  checkpoint: `Object.*` helpers, coercion/Array.from/join inputs, template
  interpolation, expression-result checkpoints) is now `copyIn(value, label, true)`,
  which passes `SandboxDate`/`SandboxRegExp`/`SandboxMap`/`SandboxSet` through **by
@@ -787,7 +805,7 @@ parity items, done as one focused pass; no public API or limit changes):
  there), so interpreter internals (`.map`/`.time`/`.regex`) can never leak; the
  template-literal sandbox carve-out collapsed into `boundedData`. Object/array spread
  already preserved instances (reference copies, no checkpoint) — now tested.
-  - **Console formatting**: `formatConsoleArgument` is total and deep
+- **Console formatting**: `formatConsoleArgument` is total and deep
  (`formatConsoleValue`): numbers render via `String` (`NaN`/`Infinity`/`-Infinity`
  literally — never the JSON `null`; finite numbers match their JSON form), nested
  strings are JSON-quoted, sandbox values keep their friendly forms at ANY depth (ISO
@@ -798,12 +816,12 @@ parity items, done as one focused pass; no public API or limit changes):
  degrades to `…` — console can no longer fail a program. `console.table` guards with
  `containsOpaqueReference` (sandbox cells render, e.g. ISO dates) and its row/cell
  walkers treat sandbox values as scalar cells.
-  - **Prose**: the instructions Syntax not-supported line dropped its `instanceof
+- **Prose**: the instructions Syntax not-supported line dropped its `instanceof
-    Error`/splice mentions (nothing else reworded); README updated (checkpoint
+Error`/splice mentions (nothing else reworded); README updated (checkpoint
  preservation vs boundary serialization, error values/`instanceof`, new array/string
  methods, regex-failure behavior); `supportedSyntaxMessage` left untouched (it lists
  supported syntax, was already non-exhaustive, and stays accurate).
-  - **Tests**: package suite 169 → 209 (parity: Error/instanceof + real-JS error-name
+- **Tests**: package suite 169 → 209 (parity: Error/instanceof + real-JS error-name
  coverage, splice/fill/copyWithin/keys/values/entries, localeCompare/normalize/trim-alias
  describes; stdlib: checkpoint survival incl. tool-arg boundary pinning, stdlib
  `instanceof`, regex-message assertions; codemode: NaN/Infinity + nested/cyclic console
@@ -812,19 +830,20 @@ parity items, done as one focused pass; no public API or limit changes):
 **Truncation layering — CodeMode truncation off in OpenCode** (user direction; resolves the
 §4 outer-truncation item the OPPOSITE way from "kill the outer one"):
-  - `maxOutputBytes` lost its 32,000 default and now behaves exactly like the other two
+
 - `maxOutputBytes` lost its 32,000 default and now behaves exactly like the other two
  limits: absent = no truncation. All three limits are uniformly no-default — budgets are
  host policy. `ResolvedExecutionLimits.maxOutputBytes` is `number | undefined`;
  `boundOutput` only runs when the host set the limit. Explicit values validate as before
  (safe integer ≥ 0).
-  - OpenCode continues to pass NO limits, which now also means no CodeMode truncation.
+- OpenCode continues to pass NO limits, which now also means no CodeMode truncation.
  `execute` is a normal `Tool.define` tool, so OpenCode's native tool-output truncation
  applies with no special-casing — verified by tracing `wrap()` (`tool.ts:130-144`,
  50KB/2000-line thresholds in `truncate.ts`, full output dumped to a file under
  `tool-output/`): the `metadata.truncated` self-truncation exemption never fires for
  `execute` (its metadata never sets that key). One truncation layer, the host's — and it
  is the richer one (file dump + explore/grep hint vs an inline marker).
-  - Hosts without their own output bounding set `maxOutputBytes` explicitly; README table
+- Hosts without their own output bounding set `maxOutputBytes` explicitly; README table
  and prose updated, adapter comment rewritten. Tests: codemode +1 (absent limit → 100KB
  value + 50KB log line pass through unbounded, `truncated` undefined); the adapter test
  that relied on the old default now asserts the oversized result reaches the shared
@@ -837,24 +856,25 @@ regular dependency; hosts depend on it themselves because the API surface is Eff
 **Registry promotion + permission-aware catalog** (the "promote to a proper tool service"
 restructure; fixes the §4 permission-advertising bug):
-  - **The adapter moved** `src/session/code-mode.ts` → `src/tool/code-mode.ts` and is now a
+
 - **The adapter moved** `src/session/code-mode.ts` → `src/tool/code-mode.ts` and is now a
  registry-resident tool service on the TaskTool precedent: `CodeModeTool =
-    Tool.define(CODE_MODE_TOOL, ...)` whose init depends on `MCP.Service`, `Agent.Service`,
+Tool.define(CODE_MODE_TOOL, ...)` whose init depends on `MCP.Service`, `Agent.Service`,
  and `Session.Service`. It is yielded in `ToolRegistry.layer`, gated into `builtin` by
  `flags.experimentalCodeMode` (like the lsp/plan experiments), and `MCP.node` joined the
  registry's `node.deps` (`MCP.node` has no ToolRegistry dependency, so no cycle). The
  session-level special-casing in `session/tools.ts` (ad-hoc `SessionCodeMode.define` +
  append) is deleted; the early return that suppresses raw per-MCP registration when the
  flag is on stays session-side, keyed on the same flag+tool-count condition.
-  - **Enablement** lives in `ToolRegistry.tools()` next to the WebSearchTool check: the MCP
+- **Enablement** lives in `ToolRegistry.tools()` next to the WebSearchTool check: the MCP
  tool count is consulted once (an Effect) before the synchronous filter, and code mode
  passes the predicate iff `flags.experimentalCodeMode` && count > 0.
-  - **Description split on the `describeTask` precedent**: the tool's static base
+- **Description split on the `describeTask` precedent**: the tool's static base
  description is a two-line summary; `describeCodeMode(agent)` in `registry.tools()`
  appends the full CodeMode instructions (workflow/rules/syntax + grouped catalog,
  `catalogInstructions` in the adapter) at the same composition point as task — so
  `plugin.trigger("tool.definition")` sees the base description first.
-  - **Permission-aware catalog + dispatch** (the bug fix): the visibility predicate from
+- **Permission-aware catalog + dispatch** (the bug fix): the visibility predicate from
  `llm/request.ts` `resolveTools` is hoisted to `Permission.visibleTools(tools, ruleset)`
  (a record filter over `Permission.disabled` — only a hard `deny` with pattern `"*"`
  hides a tool; ask-level rules stay fully visible and prompt at call time) and
@@ -867,26 +887,27 @@ restructure; fixes the §4 permission-advertising bug):
  even if the model guesses its name and yields the normal unknown-tool diagnostic.
  Documented gap (out of scope by design): per-message `user.tools[key] === false` arrives
  at request-prep after descriptions are built and has no child-call equivalent.
-  - **Preserved behavior**: cancellation race + pre-aborted-signal guard, `toSandboxResult`
+- **Preserved behavior**: cancellation race + pre-aborted-signal guard, `toSandboxResult`
  unwrap order, attachment accumulation, `CODE_MODE_TOOL` at all title sites, no execution
  limits (native truncation only), `displayInput`, per-child `ctx.ask` gating (now wired
  through `Tool.Context` exactly like every registry tool).
-  - **Explicit non-goal**: memoizing the catalog builder keyed on (ToolsChanged generation,
+- **Explicit non-goal**: memoizing the catalog builder keyed on (ToolsChanged generation,
  permission ruleset) was considered and deliberately skipped — the per-turn rebuild is
  cheap (grouping + string rendering); revisit only if profiling shows it matters.
-  - **Tests**: the two adapter suites moved to `test/tool/{code-mode,code-mode-integration}
+- **Tests**: the two adapter suites moved to `test/tool/{code-mode,code-mode-integration}
-    .test.ts` (mocked `MCP.Service`/`Agent.Service`/`Session.Service` replacing the direct
+.test.ts` (mocked `MCP.Service`/`Agent.Service`/`Session.Service` replacing the direct
  `define(...)` construction; description assertions target `catalogInstructions`, the
  registry's composition input) and gained permission coverage: deny excluded from
  catalog/search, ask-level stays visible and callable, denied tool undispatchable
  (unknown-tool diagnostic), `Permission.visibleTools` semantics. `test/tool/
-    registry.test.ts` gained four registry-level tests: registered with flag+MCP tools,
+registry.test.ts` gained four registry-level tests: registered with flag+MCP tools,
  excluded without MCP tools, excluded with flag off, and deny/ask catalog filtering
  through `registry.tools()`. Suites: 43 + 16 adapter tests, 16 registry tests, all green.
 **Shared MCP invocation middle (`McpInvoke.invoke`)** (closes the §4 "plugin hooks skip
 child calls" gap):
-  - `packages/opencode/src/mcp/invoke.ts` extracts the duplicated "invoke an MCP tool"
+
 - `packages/opencode/src/mcp/invoke.ts` extracts the duplicated "invoke an MCP tool"
  middle into one shared `McpInvoke.invoke(input)`: plugin `tool.execute.before` hook →
  permission ask (`{ permission: key, patterns: ["*"], always: ["*"] }` via the caller's
  `ctx.ask`) → dispatch through the ai-sdk tool's execute inside the `Tool.execute`
@@ -897,24 +918,24 @@ child calls" gap):
  mode applies `toSandboxResult`. It lives under `src/mcp/` because both callers
  already depend on MCP and the function is about invoking an MCP-backed ai-sdk tool,
  not about sessions or code mode.
-  - **After-hook payload**: fired inside `McpInvoke.invoke` with the raw MCP result —
+- **After-hook payload**: fired inside `McpInvoke.invoke` with the raw MCP result —
  which is exactly what the legacy loop always passed (the raw `CallToolResult`, not
  the shaped `{title, output, metadata}`), so legacy behavior is preserved bit-for-bit
  and the hook payload cannot drift between callers. No callback/edge-firing design
  was needed.
-  - **Synthetic child callID**: code-mode child calls pass `${parentCallID}/${n}` as the
+- **Synthetic child callID**: code-mode child calls pass `${parentCallID}/${n}` as the
  hook/span callID (`parentCallID` = the `execute` call's `ctx.callID`, falling back to
  the entry key; `n` = per-execution counter starting at 1, shared across all child
  calls in one program). callID is an opaque string — nothing parses it. The ai-sdk
  `toolCallId` (`options.toolCallId`) stays each caller's existing value
  (`ctx.callID ?? entry.key` for code mode).
-  - **Child-scoped hook failures**: `CodeModeTool` (which now also yields
+- **Child-scoped hook failures**: `CodeModeTool` (which now also yields
  `Plugin.Service`) wraps the whole child call — hooks, ask, dispatch — in
  `toCatchable` (the generalization of the old `askPermission` catchCause), so a plugin
  hook failure fails ONLY that child call as a catchable in-program `toolError`; other
  calls in the same program keep running and interruption still propagates as
  interruption. Legacy semantics unchanged: a hook failure fails the tool call.
-  - **Tests**: `test/tool/code-mode.test.ts` +2 (child calls fire before/after with the
+- **Tests**: `test/tool/code-mode.test.ts` +2 (child calls fire before/after with the
  MCP key and `parent/1`, `parent/2` ids, after hook carries the raw MCP result; a
  failing before hook is caught in-program, gates dispatch, and leaves the outer
  execute ok) — both code-mode harnesses gained a `Plugin.Service` mock (pass-through
@@ -927,7 +948,8 @@ child calls" gap):
 **Signature rendering + compound-assignment parity fixes** (externally reported, both
 verified real with failing tests before fixing):
-  - **Non-identifier property names in rendered signatures** (`src/tool.ts`): `renderSchema`
+
 - **Non-identifier property names in rendered signatures** (`src/tool.ts`): `renderSchema`
  emitted raw property names, so schema properties like `foo-bar`/`@type`/`x.y`/`123`
  rendered invalid TypeScript (`{ foo-bar?: string }`). Fixed with a `renderKey` helper —
  bare identifiers stay bare, everything else is `JSON.stringify`-quoted — applied in the
@@ -936,13 +958,13 @@ verified real with failing tests before fixing):
  bracket-notation `toolExpression` imports it: one source of truth for "is this a bare
  identifier" across object keys and tool paths. Tests: `signature.test.ts` +4 (compact,
  pretty with JSDoc on a quoted key, JSON Schema input+output, Effect Schema struct).
-  - **Numeric schema unions keep their real alternatives** (`src/tool.ts`): the old
+- **Numeric schema unions keep their real alternatives** (`src/tool.ts`): the old
  `anyOf`/`oneOf` renderer collapsed any union containing `{ type: "number" }` to just
  `number`, dropping real JSON Schema alternatives (`string | number`, `number | null`,
  etc.). The collapse is now restricted to Effect's number-schema artifact
  (`number | "NaN" | "Infinity" | "-Infinity"`, emitted as single-value string enums),
  while raw JSON Schema unions render every branch. Tests: `signature.test.ts` +3.
-  - **Compound assignment now matches binary-operator semantics** (`src/codemode.ts`):
+- **Compound assignment now matches binary-operator semantics** (`src/codemode.ts`):
  `applyCompoundAssignment` did raw JS ops on interpreter wrapper objects, so `x += y`
  diverged from `x = x + y` (sandbox Date `d += 1` produced `"[object Object]1"`;
  `d -= 400` gave `NaN` instead of epoch arithmetic). The operator table + coercion moved
@@ -961,8 +983,10 @@ verified real with failing tests before fixing):
 ## 4. Remaining work (detailed TODO)
 ### Next DSL-expansion pass (done — see the DSL-expansion pass entry in §3)
 Batch these together — per user direction: important, but deliberately deferred to one
 focused interpreter-surface pass rather than picked off piecemeal.
 - [x] Medium-tier JS parity items deferred from the original audit: caught errors are plain
      `{ name, message }` objects, not `instanceof Error` (and `Error` isn't a value —
      `x instanceof Error` is unsupported syntax); `splice` (still a
@@ -981,6 +1005,7 @@ focused interpreter-surface pass rather than picked off piecemeal.
      (`console.log({ m: map })`) — could deep-format instead.
 ### Next iteration: text-result handling (deliberate follow-up, user-directed)
 - [ ] Revisit how MCP text results reach the program. Today: `structuredContent` when the
      server sends it, else joined text as a plain string (the program JSON.parses it,
      guided by a workflow step). Considered and deferred: (a) conservative boundary
@@ -992,6 +1017,7 @@ focused interpreter-surface pass rather than picked off piecemeal.
      revisit once real usage shows which failure modes matter.
 ### Next iteration: stdlib surface (prioritized)
 Current instructions say "usual Array/String/Object/Math/JSON methods," but the interpreter is
 intentionally a subset. Keep CodeMode focused on orchestration and data shaping, not a full host
 runtime, but close the high-friction gaps models are likely to reach for.
@@ -1028,7 +1054,9 @@ Explicit non-goals for now: `structuredClone`, `WeakMap`/`WeakSet`, and timers
 orchestration use case.
 ### Wiring-review findings (subagent code review of the OpenCode integration, triaged)
 Pre-PR fixes (user-approved cut):
 - [x] **Cancellation does not interrupt the interpreter** — the no-limits rationale claimed
      "user cancel interrupts the execution fiber," but `tools.ts` runs tools via
      `run.promise` → `Effect.runPromise` (`effect/bridge.ts:64-66`) with NO abort wiring;
@@ -1073,6 +1101,7 @@ Pre-PR fixes (user-approved cut):
      `title: "execute"` sites in `code-mode.ts` now reference `CODE_MODE_TOOL`.
 Post-MVP (logged, not blocking an experimental flag):
 - [x] **Plugin `tool.execute.before/after` hooks skip child calls** — legacy MCP
      registration fires them per tool (`tools.ts:419-441`); under code mode only the
      outer `execute` fires them, so auditing/intercepting plugins silently lose MCP
@@ -1105,6 +1134,7 @@ Post-MVP (logged, not blocking an experimental flag):
      names that are no longer directly callable under code mode.
 ### Backlog / loose ends (non-blocking, any order)
 - [ ] `evaluateUpdateExpression` (`++`/`--`) still uses raw `Number(current)`, so `d++` on a
      sandbox Date yields `NaN` where `d += 1` now uses epoch semantics (and real JS `d++`
      would give epoch+0 numeric). Pre-existing, out of scope of the compound-assignment
@@ -1141,7 +1171,7 @@ Post-MVP (logged, not blocking an experimental flag):
 ## 5. Context and gotchas for whoever picks this up
 - **Motivating failure (why forgiving semantics + prompting matter):** in a real transcript,
-  the model wrote `me.result?.login ?? me.result` where the tool result was a JSON *string* —
+  the model wrote `me.result?.login ?? me.result` where the tool result was a JSON _string_ —
  the old strict interpreter threw (`String property 'login' is not available`); then the
  model returned a raw 105KB payload, which native truncation dumped to a file, costing a
  subagent round-trip to extract one number. Interpreter forgiveness stops the crashes;
@@ -1,10 +1,4 @@
-export {
+export { ToolError, CodeMode, ExecuteInputSchema, ExecuteResultSchema, toolError } from "./codemode.js"
  ToolError,
  CodeMode,
  ExecuteInputSchema,
  ExecuteResultSchema,
  toolError,
 } from "./codemode.js"
 export { Tool } from "./tool.js"
 export type { Definition as ToolDefinition, JsonSchema, ToolSchema } from "./tool.js"
 export type { ToolCallEnded, ToolCallHooks } from "./tool-runtime.js"
@@ -21,10 +21,15 @@ export type HostTools<R = never> = {
 export type Services<Tools> = Tools extends (...args: Array<unknown>) => Effect.Effect<unknown, unknown, infer R>
  ? R
-  : Tools extends { readonly _tag: "CodeModeTool"; readonly run: (input: unknown) => Effect.Effect<unknown, unknown, infer R> }
+  : Tools extends {
        readonly _tag: "CodeModeTool"
        readonly run: (input: unknown) => Effect.Effect<unknown, unknown, infer R>
      }
    ? R
    : Tools extends object
-    ? string extends keyof Tools ? never : Services<Tools[keyof Tools]>
+      ? string extends keyof Tools
        ? never
        : Services<Tools[keyof Tools]>
      : never
 /** Minimal audit record retained for each admitted tool call. */
@@ -68,11 +73,13 @@ export type SafeObject = Record<string, unknown>
 const reservedNamespace = "$codemode"
 const defaultMaxInlineCatalogTokens = 2_000
 const defaultSearchLimit = 10
-const searchSignature = "tools.$codemode.search({ query?: string, namespace?: string, limit?: number }): Promise<{ items: Array<{ path: string; description: string; signature: string }>; total: number }>"
+const searchSignature =
  "tools.$codemode.search({ query?: string, namespace?: string, limit?: number }): Promise<{ items: Array<{ path: string; description: string; signature: string }>; total: number }>"
 const toolExpression = (path: string) =>
-  "tools" + path
+  "tools" +
  path
    .split(".")
-    .map((segment) => identifierSegment.test(segment) ? `.${segment}` : `[${JSON.stringify(segment)}]`)
+    .map((segment) => (identifierSegment.test(segment) ? `.${segment}` : `[${JSON.stringify(segment)}]`))
    .join("")
 export class ToolReference {
@@ -88,7 +95,12 @@ const MAX_VALUE_DEPTH = 32
 export class ToolRuntimeError extends Error {
  constructor(
-    readonly kind: "UnknownTool" | "InvalidToolInput" | "InvalidToolOutput" | "InvalidDataValue" | "ToolCallLimitExceeded",
+    readonly kind:
      | "UnknownTool"
      | "InvalidToolInput"
      | "InvalidToolOutput"
      | "InvalidDataValue"
      | "ToolCallLimitExceeded",
    message: string,
    readonly suggestions: ReadonlyArray<string> = [],
  ) {
@@ -131,7 +143,13 @@ export const isBlockedMember = (name: string): boolean => blockedMemberNames.has
 export const copyIn = (value: unknown, label: string, preserveSandboxValues = false): unknown =>
  copyBounded(value, label, 0, new Set(), preserveSandboxValues)
-const copyBounded = (value: unknown, label: string, depth: number, seen: Set<object>, preserveSandboxValues: boolean): unknown => {
+const copyBounded = (
  value: unknown,
  label: string,
  depth: number,
  seen: Set<object>,
  preserveSandboxValues: boolean,
 ): unknown => {
  if (depth > MAX_VALUE_DEPTH) {
    throw new ToolRuntimeError("InvalidDataValue", `${label} exceeds the maximum value depth of ${MAX_VALUE_DEPTH}.`)
  }
@@ -166,7 +184,12 @@ const copyBounded = (value: unknown, label: string, depth: number, seen: Set<obj
    // Intra-sandbox checkpoints keep sandbox value instances alive as leaves; their contents
    // are never walked here (Map/Set members are validated where mutation happens, and the
    // real boundary still serializes them below).
-    if (value instanceof SandboxDate || value instanceof SandboxRegExp || value instanceof SandboxMap || value instanceof SandboxSet) {
+    if (
      value instanceof SandboxDate ||
      value instanceof SandboxRegExp ||
      value instanceof SandboxMap ||
      value instanceof SandboxSet
    ) {
      return value
    }
    // Host instances cannot normally reach an intra-sandbox checkpoint (tool results cross
@@ -197,8 +220,12 @@ const copyBounded = (value: unknown, label: string, depth: number, seen: Set<obj
    return Number.isFinite(value.getTime()) ? value.toISOString() : null
  }
  if (
-    value instanceof SandboxRegExp || value instanceof SandboxMap || value instanceof SandboxSet ||
+    value instanceof SandboxRegExp ||
-    value instanceof RegExp || value instanceof Map || value instanceof Set
+    value instanceof SandboxMap ||
    value instanceof SandboxSet ||
    value instanceof RegExp ||
    value instanceof Map ||
    value instanceof Set
  ) {
    return Object.create(null) as SafeObject
  }
@@ -250,7 +277,10 @@ export const copyOut = (value: unknown, undefinedAsNull = false): unknown => {
  return value
 }
-const definitions = <R>(tools: HostTools<R>, path: ReadonlyArray<string> = []): Array<{ path: string; definition: Definition<R> }> => {
+const definitions = <R>(
  tools: HostTools<R>,
  path: ReadonlyArray<string> = [],
 ): Array<{ path: string; definition: Definition<R> }> => {
  const entries: Array<{ path: string; definition: Definition<R> }> = []
  for (const [name, value] of Object.entries(tools)) {
    const next = [...path, name]
@@ -342,8 +372,11 @@ const toSearchEntry = <R>(path: string, definition: Definition<R>, description:
    path,
    definition.description,
    ...inputProperties(definition).flatMap(({ name, description: property }) =>
-      property === undefined ? [name] : [name, property]),
+      property === undefined ? [name] : [name, property],
-  ].join("\n").toLowerCase(),
+    ),
  ]
    .join("\n")
    .toLowerCase(),
 })
 /** The runtime search index over every described tool. Search is always registered. */
@@ -396,7 +429,8 @@ export const discoveryPlan = <R>(
    namespace,
    picked: new Set<ToolDescription>(),
    queue: [...group].sort(
-      (left, right) => estimate(catalogLine(left)) - estimate(catalogLine(right)) || left.path.localeCompare(right.path),
+      (left, right) =>
        estimate(catalogLine(left)) - estimate(catalogLine(right)) || left.path.localeCompare(right.path),
    ),
  }))
  let used = 0
@@ -472,7 +506,9 @@ export const discoveryPlan = <R>(
        "- A result typed `Promise<unknown>` has no guaranteed shape — verify what actually came back before relying on its fields.",
        "- Run independent calls in parallel: `await Promise.all(items.map((item) => tools.<namespace>.<tool>(item)))`.",
        "- `Object.keys(tools)` lists namespaces; `Object.keys(tools.<namespace>)` lists its tools; `for...in` works on both.",
-        ...(complete ? [] : ['- Browse one namespace: `await tools.$codemode.search({ query: "", namespace: "<name>" })`.']),
+        ...(complete
          ? []
          : ['- Browse one namespace: `await tools.$codemode.search({ query: "", namespace: "<name>" })`.']),
      ]
  const syntax = [
@@ -500,26 +536,21 @@ export const discoveryPlan = <R>(
      const count = `${group.length} tool${group.length === 1 ? "" : "s"}`
      // Annotate only when a namespace is not fully shown, so a comprehensive
      // namespace reads cleanly and a truncated one is unambiguous.
-      const label = picked.size === group.length ? count : picked.size === 0 ? `${count}, none shown` : `${count}, ${picked.size} shown`
+      const label =
        picked.size === group.length
          ? count
          : picked.size === 0
            ? `${count}, none shown`
            : `${count}, ${picked.size} shown`
      toolSection.push(`- ${namespace} (${label})`)
      for (const tool of group) if (picked.has(tool)) toolSection.push(catalogLine(tool))
    }
    if (!complete) {
-      toolSection.push(
+      toolSection.push("", "Search returns complete callable signatures:", `- ${searchSignature}`)
        "",
        "Search returns complete callable signatures:",
        `- ${searchSignature}`,
      )
    }
  }
-  const lines = [
+  const lines = [...intro, ...workflow, ...rules, ...syntax, ...toolSection]
    ...intro,
    ...workflow,
    ...rules,
    ...syntax,
    ...toolSection,
  ]
  return {
    catalog: described,
    instructions: lines.join("\n"),
@@ -534,18 +565,29 @@ export const discoveryPlan = <R>(
 * function in JS). An unknown path is an `UnknownTool` error pointing at the working
 * discovery idioms, mirroring how calling an unknown tool fails.
 */
-const namespaceKeys = <R>(tools: HostTools<R>, path: ReadonlyArray<string>, searchEnabled: boolean): ReadonlyArray<string> => {
+const namespaceKeys = <R>(
  tools: HostTools<R>,
  path: ReadonlyArray<string>,
  searchEnabled: boolean,
 ): ReadonlyArray<string> => {
  // The reserved discovery namespace is virtual (never present in the host tree); enumerate
  // it explicitly so `Object.keys(tools.$codemode)` matches the callable surface.
  if (searchEnabled && path.length === 1 && path[0] === reservedNamespace) return ["search"]
  let value: HostTool<R> | Definition<R> | HostTools<R> = tools
  for (const segment of path) {
-    if (isBlockedMember(segment) || typeof value === "function" || isDefinition(value) || !Object.hasOwn(value, segment)) {
+    if (
      isBlockedMember(segment) ||
      typeof value === "function" ||
      isDefinition(value) ||
      !Object.hasOwn(value, segment)
    ) {
      throw new ToolRuntimeError(
        "UnknownTool",
        `Unknown tool namespace '${path.join(".")}'.`,
        searchEnabled
-          ? ["Object.keys(tools) lists the available namespaces; tools.$codemode.search({ query }) finds described tools."]
+          ? [
              "Object.keys(tools) lists the available namespaces; tools.$codemode.search({ query }) finds described tools.",
            ]
          : ["Object.keys(tools) lists the available namespaces."],
      )
    }
@@ -555,12 +597,25 @@ const namespaceKeys = <R>(tools: HostTools<R>, path: ReadonlyArray<string>, sear
  return Object.keys(value)
 }
-const resolve = <R>(tools: HostTools<R>, path: ReadonlyArray<string>, searchEnabled: boolean): HostTool<R> | Definition<R> => {
+const resolve = <R>(
  tools: HostTools<R>,
  path: ReadonlyArray<string>,
  searchEnabled: boolean,
 ): HostTool<R> | Definition<R> => {
  let value: HostTool<R> | Definition<R> | HostTools<R> = tools
  for (const segment of path) {
-    if (isBlockedMember(segment) || typeof value === "function" || isDefinition(value) || !Object.hasOwn(value, segment)) {
+    if (
-      throw new ToolRuntimeError("UnknownTool", `Unknown tool '${path.join(".")}'.`, searchEnabled ? ["Use tools.$codemode.search({ query }) to find available described tools."] : [])
+      isBlockedMember(segment) ||
      typeof value === "function" ||
      isDefinition(value) ||
      !Object.hasOwn(value, segment)
    ) {
      throw new ToolRuntimeError(
        "UnknownTool",
        `Unknown tool '${path.join(".")}'.`,
        searchEnabled ? ["Use tools.$codemode.search({ query }) to find available described tools."] : [],
      )
    }
    value = value[segment] as HostTool<R> | Definition<R> | HostTools<R>
  }
@@ -602,7 +657,8 @@ export const make = <R>(
    return effect.pipe(
      Effect.tap(() => onEnd({ ...call, durationMs: Date.now() - startedAt, outcome: "success" })),
      Effect.tapError((error) =>
-        onEnd({ ...call, durationMs: Date.now() - startedAt, outcome: "failure", message: failureMessage(error) })),
+        onEnd({ ...call, durationMs: Date.now() - startedAt, outcome: "failure", message: failureMessage(error) }),
      ),
    )
  }
@@ -624,7 +680,7 @@ export const make = <R>(
    calls,
    keys: (path) => namespaceKeys(tools, path, searchEnabled),
    invoke: (path, args) =>
-      Effect.gen(function*() {
+      Effect.gen(function* () {
        const name = path.join(".")
        const externalArgs = args.map((arg) => copyOut(copyIn(arg, `Arguments for tool '${name}'`)))
        const call = { name }
@@ -637,17 +693,32 @@ export const make = <R>(
          if (!searchEnabled) throw new ToolRuntimeError("UnknownTool", `Unknown tool '${name}'.`)
          const input = externalArgs[0]
          if (externalArgs.length !== 1 || input === null || typeof input !== "object" || Array.isArray(input)) {
-            throw new ToolRuntimeError("InvalidToolInput", "tools.$codemode.search expects { query?: string; namespace?: string; limit?: number }.")
+            throw new ToolRuntimeError(
              "InvalidToolInput",
              "tools.$codemode.search expects { query?: string; namespace?: string; limit?: number }.",
            )
          }
          const request = input as { query?: unknown; namespace?: unknown; limit?: unknown }
          if (request.query !== undefined && typeof request.query !== "string") {
-            throw new ToolRuntimeError("InvalidToolInput", "tools.$codemode.search query must be a string when provided.")
+            throw new ToolRuntimeError(
              "InvalidToolInput",
              "tools.$codemode.search query must be a string when provided.",
            )
          }
          if (request.namespace !== undefined && typeof request.namespace !== "string") {
-            throw new ToolRuntimeError("InvalidToolInput", "tools.$codemode.search namespace must be a string when provided.")
+            throw new ToolRuntimeError(
              "InvalidToolInput",
              "tools.$codemode.search namespace must be a string when provided.",
            )
          }
-          if (request.limit !== undefined && (typeof request.limit !== "number" || !Number.isSafeInteger(request.limit) || request.limit <= 0)) {
+          if (
-            throw new ToolRuntimeError("InvalidToolInput", "tools.$codemode.search limit must be a positive safe integer when provided.")
+            request.limit !== undefined &&
            (typeof request.limit !== "number" || !Number.isSafeInteger(request.limit) || request.limit <= 0)
          ) {
            throw new ToolRuntimeError(
              "InvalidToolInput",
              "tools.$codemode.search limit must be a positive safe integer when provided.",
            )
          }
          const query = typeof request.query === "string" ? request.query : ""
          const namespace = typeof request.namespace === "string" ? request.namespace : undefined
@@ -656,20 +727,27 @@ export const make = <R>(
            Effect.try({
              try: () => {
                const limit = typeof request.limit === "number" ? request.limit : defaultSearchLimit
-                const scoped = namespace === undefined ? searchIndex : searchIndex.filter((entry) => entry.namespace === namespace)
+                const scoped =
                  namespace === undefined ? searchIndex : searchIndex.filter((entry) => entry.namespace === namespace)
                // A query that names one tool path exactly (canonical path or rendered
                // JavaScript expression) is a lookup, not a search: return that tool alone.
                const trimmed = query.trim()
                const pathQuery = trimmed.startsWith("tools.") ? trimmed.slice("tools.".length) : trimmed
-                const exact = pathQuery === "" ? undefined : scoped.find((entry) =>
+                const exact =
-                  entry.description.path === pathQuery || toolExpression(entry.description.path) === trimmed)
+                  pathQuery === ""
                    ? undefined
                    : scoped.find(
                        (entry) =>
                          entry.description.path === pathQuery || toolExpression(entry.description.path) === trimmed,
                      )
                const terms = tokenize(query).map(termForms)
                // Additive field-weighted scoring, summed across terms: exact path or path
                // segment (20) > path substring (8) > description substring (4) > any
                // searchable text, incl. input parameter names/descriptions (2). Each term
                // matches a field when any of its forms (the term or a singular variant)
                // does. An empty query browses everything, alphabetical by path.
-                const ranked = exact !== undefined
+                const ranked =
                  exact !== undefined
                    ? [exact]
                    : scoped
                        .map((entry) => {
@@ -687,8 +765,11 @@ export const make = <R>(
                          return { entry, score }
                        })
                        .filter(({ score }) => terms.length === 0 || score > 0)
-                      .sort((left, right) =>
+                        .sort(
-                        right.score - left.score || left.entry.description.path.localeCompare(right.entry.description.path))
+                          (left, right) =>
                            right.score - left.score ||
                            left.entry.description.path.localeCompare(right.entry.description.path),
                        )
                        .map(({ entry }) => entry)
                // Result paths are rendered as JavaScript expressions so each `path` is
                // directly usable as the call site (`await tools.github.list({ ... })` or
@@ -711,10 +792,12 @@ export const make = <R>(
        const tool = resolve(tools, path, searchEnabled)
        let describedInput: unknown
        if (isDefinition(tool)) {
-          if (externalArgs.length !== 1) throw new ToolRuntimeError("InvalidToolInput", `Tool '${name}' expects exactly one input object.`)
+          if (externalArgs.length !== 1)
            throw new ToolRuntimeError("InvalidToolInput", `Tool '${name}' expects exactly one input object.`)
          describedInput = yield* Effect.try({
            try: () => decodeToolInput(tool, externalArgs[0]),
-            catch: (cause) => new ToolRuntimeError("InvalidToolInput", `Invalid input for tool '${name}': ${String(cause)}`),
+            catch: (cause) =>
              new ToolRuntimeError("InvalidToolInput", `Invalid input for tool '${name}': ${String(cause)}`),
          })
        }
        const input = isDefinition(tool) ? describedInput : externalArgs
@@ -722,7 +805,7 @@ export const make = <R>(
        const currentCall = { index, name, input }
        if (isDefinition(tool)) {
          return yield* observeEnd(
-            Effect.gen(function*() {
+            Effect.gen(function* () {
              const raw = yield* runHost(Effect.suspend(() => tool.run(describedInput)))
              const result = yield* Effect.try({
                try: () => decodeToolOutput(tool, raw),
@@ -734,7 +817,7 @@ export const make = <R>(
          )
        }
        return yield* observeEnd(
-          Effect.gen(function*() {
+          Effect.gen(function* () {
            return yield* decodeOutput(yield* runHost(Effect.suspend(() => tool(...externalArgs))), name)
          }),
          currentCall,
@@ -57,8 +57,7 @@ export type Options<I extends ToolSchema, O extends ToolSchema | undefined, R =
 export const isDefinition = <R = never>(value: unknown): value is Definition<R> =>
  typeof value === "object" && value !== null && "_tag" in value && value._tag === "CodeModeTool"
-const isEffectSchema = (schema: ToolSchema): schema is Schema.Decoder<unknown> & Schema.Top =>
+const isEffectSchema = (schema: ToolSchema): schema is Schema.Decoder<unknown> & Schema.Top => Schema.isSchema(schema)
  Schema.isSchema(schema)
 const renderLiteral = (value: unknown): string => JSON.stringify(value) ?? "unknown"
@@ -69,10 +68,12 @@ const renderLiteral = (value: unknown): string => JSON.stringify(value) ?? "unkn
 export const identifierSegment = /^[A-Za-z_$][A-Za-z0-9_$]*$/
 /** Renders a property name as a valid TS object key: bare when an identifier, quoted otherwise. */
-const renderKey = (name: string): string => identifierSegment.test(name) ? name : JSON.stringify(name)
+const renderKey = (name: string): string => (identifierSegment.test(name) ? name : JSON.stringify(name))
 const effectNumberSentinel = (schema: JsonSchema) =>
-  schema.type === "string" && Array.isArray(schema.enum) && schema.enum.length === 1 &&
+  schema.type === "string" &&
  Array.isArray(schema.enum) &&
  schema.enum.length === 1 &&
  (schema.enum[0] === "NaN" || schema.enum[0] === "Infinity" || schema.enum[0] === "-Infinity")
 /**
@@ -118,7 +119,8 @@ const docTags = (schema: JsonSchema): Array<string> => {
 */
 const jsdoc = (description: string | undefined, tags: ReadonlyArray<string>, pad: string): string => {
  const lines = [...(description === undefined ? [] : description.split("\n")), ...tags].map((line) =>
-    line.replaceAll("*/", "* /").replace(/\s+$/, ""))
+    line.replaceAll("*/", "* /").replace(/\s+$/, ""),
  )
  while (lines.length > 0 && lines[0]!.trim() === "") lines.shift()
  while (lines.length > 0 && lines[lines.length - 1]!.trim() === "") lines.pop()
  if (lines.length === 0) return ""
@@ -127,7 +129,12 @@ const jsdoc = (description: string | undefined, tags: ReadonlyArray<string>, pad
  return `${pad}/**\n${body}\n${pad} */\n`
 }
-const renderSchema = (schema: JsonSchema, ctx: RenderContext, depth = 0, seen: ReadonlySet<string> = new Set()): string => {
+const renderSchema = (
  schema: JsonSchema,
  ctx: RenderContext,
  depth = 0,
  seen: ReadonlySet<string> = new Set(),
 ): string => {
  if (depth > MAX_RENDER_DEPTH) return "unknown"
  if (schema.$ref) {
    const name = schema.$ref.split("/").pop()
@@ -146,13 +153,16 @@ const renderSchema = (schema: JsonSchema, ctx: RenderContext, depth = 0, seen: R
    if (
      alternatives.some((item) => item.type === "number") &&
      alternatives.every((item) => item.type === "number" || effectNumberSentinel(item))
-    ) return "number"
+    )
      return "number"
    // An empty Schema.Struct({}) emits `anyOf: [{ type: "object" }, { type: "array" }]`
    // (no properties/items); render the bare shape as {} instead of `{} | Array<unknown>`.
    if (
      alternatives.length === 2 &&
-      alternatives[0]?.type === "object" && alternatives[0].properties === undefined &&
+      alternatives[0]?.type === "object" &&
-      alternatives[1]?.type === "array" && alternatives[1].items === undefined
+      alternatives[0].properties === undefined &&
      alternatives[1]?.type === "array" &&
      alternatives[1].items === undefined
    ) {
      return "{}"
    }
@@ -170,7 +180,8 @@ const renderSchema = (schema: JsonSchema, ctx: RenderContext, depth = 0, seen: R
    const required = new Set(schema.required ?? [])
    const properties = Object.entries(schema.properties ?? {})
    const additional = schema.additionalProperties
-    const indexType = additional && typeof additional === "object" ? renderSchema(additional, ctx, depth + 1, seen) : undefined
+    const indexType =
      additional && typeof additional === "object" ? renderSchema(additional, ctx, depth + 1, seen) : undefined
    const field = ([name, value]: readonly [string, JsonSchema]) =>
      `${renderKey(name)}${required.has(name) ? "" : "?"}: ${renderSchema(value, ctx, depth + 1, seen)}`
@@ -183,7 +194,9 @@ const renderSchema = (schema: JsonSchema, ctx: RenderContext, depth = 0, seen: R
    // Pretty: an indented block, each described field preceded by its JSDoc comment.
    if (properties.length === 0 && indexType === undefined) return "{}"
    const pad = "  ".repeat(depth + 1)
-    const lines = properties.map((entry) => `${jsdoc(entry[1].description, docTags(entry[1]), pad)}${pad}${field(entry)}`)
+    const lines = properties.map(
      (entry) => `${jsdoc(entry[1].description, docTags(entry[1]), pad)}${pad}${field(entry)}`,
    )
    if (indexType !== undefined) lines.push(`${pad}[key: string]: ${indexType}`)
    return `{\n${lines.join("\n")}\n${"  ".repeat(depth)}}`
  }
@@ -262,7 +275,9 @@ export const inputProperties = <R>(definition: Definition<R>): Array<InputProper
 * fields; the default stays the compact single-line form.
 */
 export const inputTypeScript = <R>(definition: Definition<R>, pretty = false): string =>
-  isEffectSchema(definition.input) ? toTypeScript(definition.input, false, pretty) : jsonSchemaToTypeScript(definition.input, pretty)
+  isEffectSchema(definition.input)
    ? toTypeScript(definition.input, false, pretty)
    : jsonSchemaToTypeScript(definition.input, pretty)
 /**
 * The model-visible TypeScript type of a tool's result; tools without an output schema
@@ -49,4 +49,7 @@ export class SandboxSet {
 }
 export const isSandboxValue = (value: unknown): value is SandboxDate | SandboxRegExp | SandboxMap | SandboxSet =>
-  value instanceof SandboxDate || value instanceof SandboxRegExp || value instanceof SandboxMap || value instanceof SandboxSet
+  value instanceof SandboxDate ||
  value instanceof SandboxRegExp ||
  value instanceof SandboxMap ||
  value instanceof SandboxSet
@@ -1,6 +1,13 @@
 import { describe, expect, test } from "bun:test"
 import { Cause, Effect, Schema } from "effect"
-import { CodeMode, ExecuteInputSchema, ExecuteResultSchema, Tool, toolError, type ExecutionLimits } from "../src/index.js"
+import {
  CodeMode,
  ExecuteInputSchema,
  ExecuteResultSchema,
  Tool,
  toolError,
  type ExecutionLimits,
 } from "../src/index.js"
 import type { Definition } from "../src/tool.js"
 const run = (tool: Definition<never>) =>
@@ -75,11 +82,14 @@ describe("CodeMode host failure boundary", () => {
        output: Schema.Unknown,
        run: () =>
          Effect.succeed(
-            new Proxy({}, {
+            new Proxy(
              {},
              {
                ownKeys: () => {
                  throw new Error("host-output-secret")
                },
-            }),
+              },
            ),
          ),
      }),
    )
@@ -162,9 +172,7 @@ describe("CodeMode tool-call observation", () => {
    )
    expect(result.ok).toBe(true)
-    expect(calls).toStrictEqual([
+    expect(calls).toStrictEqual([{ index: 0, name: "context.lookup", input: { query: "deployment failure" } }])
      { index: 0, name: "context.lookup", input: { query: "deployment failure" } },
    ])
  })
  test("observes settled calls with outcome and duration", async () => {
@@ -173,16 +181,17 @@ describe("CodeMode tool-call observation", () => {
      description: "Look up a value",
      input: Schema.Struct({ query: Schema.String }),
      output: Schema.String,
-      run: ({ query }) =>
+      run: ({ query }) => (query === "boom" ? Effect.fail(toolError("Lookup refused")) : Effect.succeed(query)),
        query === "boom" ? Effect.fail(toolError("Lookup refused")) : Effect.succeed(query),
    })
    const runtime = CodeMode.make({
      tools: { context: { lookup } },
-      onToolCallStart: (call) => Effect.sync(() => {
+      onToolCallStart: (call) =>
        Effect.sync(() => {
          events.push({ phase: "start", index: call.index, name: call.name })
        }),
-      onToolCallEnd: (call) => Effect.sync(() => {
+      onToolCallEnd: (call) =>
        Effect.sync(() => {
          expect(call.durationMs).toBeGreaterThanOrEqual(0)
          events.push({
            phase: "end",
@@ -210,13 +219,15 @@ describe("CodeMode tool-call observation", () => {
 describe("CodeMode console capture", () => {
  test("captures console output as bounded result logs", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        const returned = console.log("Thread info:", { name: "Demo", count: 2 })
        console.warn("careful")
        return returned
      `,
-    }))
+      }),
    )
    expect(result).toStrictEqual({
      ok: true,
@@ -228,39 +239,45 @@ describe("CodeMode console capture", () => {
  })
  test("keeps logs captured before failures", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        console.log("before failure")
        throw new Error("boom")
      `,
-    }))
+      }),
    )
    expect(result.ok ? undefined : result.logs).toStrictEqual(["before failure"])
    expect(result.ok ? undefined : result.error.message).toBe("Uncaught: boom")
  })
  test("prints NaN and Infinity literally instead of the JSON null", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        console.log(NaN)
        console.log(Infinity, -Infinity)
        console.log({ ratio: NaN, bounds: [Infinity] })
        return null
      `,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
    expect(result.logs).toStrictEqual(["NaN", "Infinity -Infinity", '{"ratio":NaN,"bounds":[Infinity]}'])
  })
  test("renders sandbox values nested inside logged containers", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        console.log({ m: new Map([["a", 1]]), when: new Date(0), r: /ab/g, s: new Set([1, 2]) })
        console.log([new Date(0)])
        return null
      `,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
    expect(result.logs).toStrictEqual([
@@ -270,7 +287,8 @@ describe("CodeMode console capture", () => {
  })
  test("console formatting is total: cycles and opaque references render as markers", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        const m = new Map()
        m.set("self", m)
@@ -278,29 +296,30 @@ describe("CodeMode console capture", () => {
        console.log({ fn: (x) => x, ok: 1 })
        return null
      `,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
-    expect(result.logs).toStrictEqual([
+    expect(result.logs).toStrictEqual(['{"box":Map(1) [["self",[Circular]]]}', '{"fn":[CodeMode reference],"ok":1}'])
      '{"box":Map(1) [["self",[Circular]]]}',
      '{"fn":[CodeMode reference],"ok":1}',
    ])
  })
  test("console.table renders sandbox value cells", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        console.table([{ when: new Date(0), n: NaN }])
        return null
      `,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
    expect(result.logs).toStrictEqual(["(index)\twhen\tn\n0\t1970-01-01T00:00:00.000Z\tNaN"])
  })
  test("captures console.dir and console.table output", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        console.dir({ nested: { ok: true } })
        console.table([
@@ -309,15 +328,13 @@ describe("CodeMode console capture", () => {
        ], ["name", "count"])
        return "done"
      `,
-    }))
+      }),
    )
    expect(result).toStrictEqual({
      ok: true,
      value: "done",
-      logs: [
+      logs: ['{"nested":{"ok":true}}', "(index)\tname\tcount\n0\tKit\t1\n1\tOlive\t2"],
        '{"nested":{"ok":true}}',
        "(index)\tname\tcount\n0\tKit\t1\n1\tOlive\t2",
      ],
      toolCalls: [],
    })
  })
@@ -325,9 +342,11 @@ describe("CodeMode console capture", () => {
 describe("CodeMode output budget", () => {
  test("absent maxOutputBytes means no truncation at all", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `console.log("z".repeat(50_000)); return "x".repeat(100_000)`,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
    if (!result.ok) return
@@ -338,29 +357,35 @@ describe("CodeMode output budget", () => {
  test("truncates an oversized result value with a marker instead of failing", async () => {
    const limits: ExecutionLimits = { maxOutputBytes: 40 }
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `return { data: "${"x".repeat(200)}" }`,
        limits,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
    if (!result.ok) return
    expect(result.truncated).toBe(true)
    expect(typeof result.value).toBe("string")
-    expect(result.value).toMatch(/^\{"data":"x+ \[result truncated: \d+ bytes exceeds the 40-byte output limit; return a smaller value\]$/)
+    expect(result.value).toMatch(
      /^\{"data":"x+ \[result truncated: \d+ bytes exceeds the 40-byte output limit; return a smaller value\]$/,
    )
    expect(Schema.decodeUnknownSync(ExecuteResultSchema)(JSON.parse(JSON.stringify(result)))).toStrictEqual(result)
  })
  test("keeps leading logs within the remaining budget and marks the cut", async () => {
    const limits: ExecutionLimits = { maxOutputBytes: 40 }
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        console.log("first line")
        console.log("${"y".repeat(200)}")
        return "ok"
      `,
        limits,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
    if (!result.ok) return
@@ -370,12 +395,14 @@ describe("CodeMode output budget", () => {
  })
  test("does not mark results within the budget", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `
        console.log("fits")
        return { fits: true }
      `,
-    }))
+      }),
    )
    expect(result).toStrictEqual({
      ok: true,
      value: { fits: true },
@@ -395,18 +422,21 @@ describe("CodeMode schema flexibility", () => {
        properties: { id: { type: "string" }, count: { type: "number" } },
        required: ["id"],
      },
-      run: (input) => Effect.sync(() => {
+      run: (input) =>
        Effect.sync(() => {
          observed.push(input)
          return { echoed: input }
        }),
    })
    const runtime = CodeMode.make({ tools: { adapter: { call } } })
-    expect(runtime.catalog()).toStrictEqual([{
+    expect(runtime.catalog()).toStrictEqual([
      {
        path: "adapter.call",
        description: "Call an adapter-described tool",
        signature: "tools.adapter.call(input: { id: string; count?: number }): Promise<unknown>",
-    }])
+      },
    ])
    // JSON Schema is render-only: mistyped input passes through unvalidated.
    const result = await Effect.runPromise(runtime.execute(`return await tools.adapter.call({ id: 42 })`))
@@ -421,17 +451,25 @@ describe("CodeMode schema flexibility", () => {
      input: { type: "object", properties: { login: { type: "string" } }, required: ["login"] },
      output: {
        $ref: "#/$defs/User",
-        $defs: { User: { type: "object", properties: { login: { type: "string" }, id: { type: "number" } }, required: ["login", "id"] } },
+        $defs: {
          User: {
            type: "object",
            properties: { login: { type: "string" }, id: { type: "number" } },
            required: ["login", "id"],
          },
        },
      },
      run: () => Effect.succeed({ login: "kit", id: 7 }),
    })
    const runtime = CodeMode.make({ tools: { users: { lookup } } })
-    expect(runtime.catalog()).toStrictEqual([{
+    expect(runtime.catalog()).toStrictEqual([
      {
        path: "users.lookup",
        description: "Look up a user",
        signature: "tools.users.lookup(input: { login: string }): Promise<{ login: string; id: number }>",
-    }])
+      },
    ])
    const result = await Effect.runPromise(runtime.execute(`return await tools.users.lookup({ login: "kit" })`))
    expect(result.ok).toBe(true)
@@ -478,16 +516,20 @@ describe("CodeMode public contract", () => {
    expect(agentTool.input).toBe(ExecuteInputSchema)
    expect(agentTool.output).toBe(ExecuteResultSchema)
    expect(agentTool.description).toBe(runtime.instructions())
-    expect(Schema.decodeUnknownSync(ExecuteResultSchema)(JSON.parse(JSON.stringify(projected)))).toStrictEqual(projected)
+    expect(Schema.decodeUnknownSync(ExecuteResultSchema)(JSON.parse(JSON.stringify(projected)))).toStrictEqual(
      projected,
    )
  })
  test("inlines a COMPLETE small catalog and keeps search registered but unadvertised", async () => {
    const runtime = CodeMode.make({ tools })
-    expect(runtime.catalog()).toStrictEqual([{
+    expect(runtime.catalog()).toStrictEqual([
      {
        path: "orders.lookup",
        description: "Look up an order by ID",
        signature: "tools.orders.lookup(input: { id: string }): Promise<{ id: string; status: string }>",
-    }])
+      },
    ])
    expect(runtime.instructions()).toContain("Available tools (COMPLETE list")
    expect(runtime.instructions()).toContain("- orders (1 tool)")
    expect(runtime.instructions()).toContain(
@@ -502,11 +544,13 @@ describe("CodeMode public contract", () => {
    expect(result.ok).toBe(true)
    if (result.ok) {
      expect(result.value).toStrictEqual({
-        items: [{
+        items: [
          {
            path: "tools.orders.lookup",
            description: "Look up an order by ID",
            signature: "tools.orders.lookup(input: {\n  id: string\n}): Promise<{\n  id: string\n  status: string\n}>",
-        }],
+          },
        ],
        total: 1,
      })
    }
@@ -521,31 +565,43 @@ describe("CodeMode public contract", () => {
    })
    const runtime = CodeMode.make({ tools: { context7: { "resolve-library-id": resolveLibrary } } })
-    expect(runtime.catalog()).toStrictEqual([{
+    expect(runtime.catalog()).toStrictEqual([
      {
        path: "context7.resolve-library-id",
        description: "Resolve a library ID",
        signature: 'tools.context7["resolve-library-id"](input: { libraryName: string }): Promise<string>',
-    }])
+      },
-    expect(runtime.instructions()).toContain('tools.context7["resolve-library-id"](input: { libraryName: string }): Promise<string>')
+    ])
    expect(runtime.instructions()).toContain(
      'tools.context7["resolve-library-id"](input: { libraryName: string }): Promise<string>',
    )
-    const search = await Effect.runPromise(runtime.execute(`return await tools.$codemode.search({ query: "resolve library id" })`))
+    const search = await Effect.runPromise(
      runtime.execute(`return await tools.$codemode.search({ query: "resolve library id" })`),
    )
    expect(search.ok).toBe(true)
    if (search.ok) {
      expect(search.value).toStrictEqual({
-        items: [{
+        items: [
          {
            path: 'tools.context7["resolve-library-id"]',
            description: "Resolve a library ID",
            signature: 'tools.context7["resolve-library-id"](input: {\n  libraryName: string\n}): Promise<string>',
-        }],
+          },
        ],
        total: 1,
      })
    }
-    const call = await Effect.runPromise(runtime.execute(`return await tools.context7["resolve-library-id"]({ libraryName: "TypeScript" })`))
+    const call = await Effect.runPromise(
      runtime.execute(`return await tools.context7["resolve-library-id"]({ libraryName: "TypeScript" })`),
    )
    expect(call.ok).toBe(true)
    if (call.ok) expect(call.value).toBe("/resolved/TypeScript")
-    const exact = await Effect.runPromise(runtime.execute(`return await tools.$codemode.search({ query: 'tools.context7["resolve-library-id"]' })`))
+    const exact = await Effect.runPromise(
      runtime.execute(`return await tools.$codemode.search({ query: 'tools.context7["resolve-library-id"]' })`),
    )
    expect(exact.ok).toBe(true)
    if (exact.ok) expect((exact.value as { total: number }).total).toBe(1)
  })
@@ -561,7 +617,9 @@ describe("CodeMode public contract", () => {
    expect(instructions.indexOf("## Rules")).toBeLessThan(instructions.indexOf("## Syntax"))
    expect(instructions.indexOf("## Syntax")).toBeLessThan(instructions.indexOf("\n## Available tools (COMPLETE list"))
    // The workflow carries the result-shape guidance; Rules only add content beyond it.
-    expect(instructions).toContain('`const data = typeof res === "string" ? JSON.parse(res) : res` — most tools return JSON as a string')
+    expect(instructions).toContain(
      '`const data = typeof res === "string" ? JSON.parse(res) : res` — most tools return JSON as a string',
    )
    expect(instructions).toContain("Return only the fields you need")
    expect(instructions).toContain("raw payloads get truncated and waste context")
    expect(instructions).toContain("`const res = await tools.<namespace>.<tool>(input)`")
@@ -584,8 +642,12 @@ describe("CodeMode public contract", () => {
    expect(partial).toContain(
      '1. Find a tool (skip when it is already listed below): `const { items } = await tools.$codemode.search({ query: "<intent + key nouns>" })` — short phrases like "list issues" work best.',
    )
-    expect(partial).toContain("Only tools listed here or returned by `tools.$codemode.search` are available inside `tools`")
+    expect(partial).toContain(
-    expect(partial).toContain('- Browse one namespace: `await tools.$codemode.search({ query: "", namespace: "<name>" })`.')
+      "Only tools listed here or returned by `tools.$codemode.search` are available inside `tools`",
    )
    expect(partial).toContain(
      '- Browse one namespace: `await tools.$codemode.search({ query: "", namespace: "<name>" })`.',
    )
    expect(partial).not.toContain("total_count")
    expect(partial).not.toContain("tools.orders.lookup({")
  })
@@ -604,7 +666,9 @@ describe("CodeMode public contract", () => {
    expect(instructions).not.toContain("instanceof Error")
    expect(instructions).not.toContain("splice")
    // The data-boundary note survives.
-    expect(instructions).toContain("Dates serialize to ISO strings at data boundaries; Map/Set/RegExp serialize to `{}`.")
+    expect(instructions).toContain(
      "Dates serialize to ISO strings at data boundaries; Map/Set/RegExp serialize to `{}`.",
    )
  })
  test("zero tools keep minimal sections and the no-tools notice", () => {
@@ -635,18 +699,22 @@ describe("CodeMode public contract", () => {
      tools: { thread: { uploadFile: upload, generateImage: generate }, orders: { lookup } },
      discovery: { maxInlineCatalogTokens: 0 },
    })
-    expect(runtime.instructions()).toContain("Available tools (PARTIAL — 0 of 3 shown; find the rest with tools.$codemode.search)")
+    expect(runtime.instructions()).toContain(
      "Available tools (PARTIAL — 0 of 3 shown; find the rest with tools.$codemode.search)",
    )
    expect(runtime.instructions()).toContain("- thread (2 tools, none shown)")
    expect(runtime.instructions()).toContain("- orders (1 tool, none shown)")
    expect(runtime.instructions()).toMatch(/\$codemode\.search/)
    expect(runtime.instructions()).not.toMatch(/tools\.thread\.uploadFile\(input/)
-    const result = await Effect.runPromise(runtime.execute(`
+    const result = await Effect.runPromise(
      runtime.execute(`
      return await tools.$codemode.search({
        query: "send message attachment upload file to current Discord thread",
        limit: 2
      })
-    `))
+    `),
    )
    expect(result.ok).toBe(true)
    if (!result.ok) return
    expect(result.value).toStrictEqual({
@@ -666,19 +734,27 @@ describe("CodeMode public contract", () => {
    })
    expect(result.toolCalls).toStrictEqual([{ name: "$codemode.search" }])
-    const variants = await Effect.runPromise(runtime.execute(`
+    const variants = await Effect.runPromise(
      runtime.execute(`
      return await Promise.all([
        tools.$codemode.search({ query: "file" }),
        tools.$codemode.search({ query: "image" })
      ])
-    `))
+    `),
    )
    expect(variants.ok).toBe(true)
    if (variants.ok) {
-      expect((variants.value as Array<{ items: Array<{ path: string }> }>)[0]?.items[0]?.path).toBe("tools.thread.uploadFile")
+      expect((variants.value as Array<{ items: Array<{ path: string }> }>)[0]?.items[0]?.path).toBe(
-      expect((variants.value as Array<{ items: Array<{ path: string }> }>)[1]?.items[0]?.path).toBe("tools.thread.generateImage")
+        "tools.thread.uploadFile",
      )
      expect((variants.value as Array<{ items: Array<{ path: string }> }>)[1]?.items[0]?.path).toBe(
        "tools.thread.generateImage",
      )
    }
-    const removed = await Effect.runPromise(runtime.execute(`return await tools.$codemode.describe({ path: "thread.uploadFile" })`))
+    const removed = await Effect.runPromise(
      runtime.execute(`return await tools.$codemode.describe({ path: "thread.uploadFile" })`),
    )
    expect(removed.ok).toBe(false)
    if (!removed.ok) expect(removed.error.kind).toBe("UnknownTool")
  })
@@ -706,15 +782,19 @@ describe("CodeMode public contract", () => {
    }
    for (const query of ["many.tool13", "tools.many.tool13"]) {
-      const exact = await Effect.runPromise(runtime.execute(`return await tools.$codemode.search({ query: ${JSON.stringify(query)} })`))
+      const exact = await Effect.runPromise(
        runtime.execute(`return await tools.$codemode.search({ query: ${JSON.stringify(query)} })`),
      )
      expect(exact.ok).toBe(true)
      if (exact.ok) {
        expect(exact.value).toStrictEqual({
-          items: [{
+          items: [
            {
              path: "tools.many.tool13",
              description: "Numbered tool 13",
              signature: "tools.many.tool13(input: {\n  id: string\n}): Promise<string>",
-          }],
+            },
          ],
          total: 1,
        })
      }
@@ -737,20 +817,23 @@ describe("CodeMode public contract", () => {
    })
    // Empty query + namespace browses just that namespace, alphabetical by path.
-    const browse = await Effect.runPromise(runtime.execute(
+    const browse = await Effect.runPromise(
-      `return await tools.$codemode.search({ query: "", namespace: "github" })`,
+      runtime.execute(`return await tools.$codemode.search({ query: "", namespace: "github" })`),
-    ))
+    )
    expect(browse.ok).toBe(true)
    if (browse.ok) {
      const value = browse.value as { items: Array<{ path: string }>; total: number }
      expect(value.total).toBe(2)
-      expect(value.items.map((item) => item.path)).toStrictEqual(["tools.github.create_issue", "tools.github.list_issues"])
+      expect(value.items.map((item) => item.path)).toStrictEqual([
        "tools.github.create_issue",
        "tools.github.list_issues",
      ])
    }
    // A query + namespace ranks within that namespace only.
-    const scoped = await Effect.runPromise(runtime.execute(
+    const scoped = await Effect.runPromise(
-      `return await tools.$codemode.search({ query: "issues", namespace: "linear" })`,
+      runtime.execute(`return await tools.$codemode.search({ query: "issues", namespace: "linear" })`),
-    ))
+    )
    expect(scoped.ok).toBe(true)
    if (scoped.ok) {
      const value = scoped.value as { items: Array<{ path: string }>; total: number }
@@ -758,9 +841,9 @@ describe("CodeMode public contract", () => {
      expect(value.items[0]?.path).toBe("tools.linear.list_issues")
    }
-    const invalid = await Effect.runPromise(runtime.execute(
+    const invalid = await Effect.runPromise(
-      `return await tools.$codemode.search({ query: "issues", namespace: 7 })`,
+      runtime.execute(`return await tools.$codemode.search({ query: "issues", namespace: 7 })`),
-    ))
+    )
    expect(invalid.ok).toBe(false)
    if (!invalid.ok) expect(invalid.error.kind).toBe("InvalidToolInput")
  })
@@ -785,9 +868,9 @@ describe("CodeMode public contract", () => {
    // "attachment" appears in neither path nor description — only in the input schema's
    // property names, which the searchable text includes.
-    const byParameter = await Effect.runPromise(runtime.execute(
+    const byParameter = await Effect.runPromise(
-      `return await tools.$codemode.search({ query: "attachment" })`,
+      runtime.execute(`return await tools.$codemode.search({ query: "attachment" })`),
-    ))
+    )
    expect(byParameter.ok).toBe(true)
    if (byParameter.ok) {
      const value = byParameter.value as { items: Array<{ path: string }>; total: number }
@@ -796,9 +879,9 @@ describe("CodeMode public contract", () => {
    }
    // Substring matching: a partial word ("docum") still hits the description.
-    const bySubstring = await Effect.runPromise(runtime.execute(
+    const bySubstring = await Effect.runPromise(
-      `return await tools.$codemode.search({ query: "docum" })`,
+      runtime.execute(`return await tools.$codemode.search({ query: "docum" })`),
-    ))
+    )
    expect(bySubstring.ok).toBe(true)
    if (bySubstring.ok) {
      const value = bySubstring.value as { items: Array<{ path: string }>; total: number }
@@ -825,9 +908,9 @@ describe("CodeMode public contract", () => {
    })
    // "issues" still finds the singular-only tool (term OR singular(term) per field)...
-    const plural = await Effect.runPromise(runtime.execute(
+    const plural = await Effect.runPromise(
-      `return await tools.$codemode.search({ query: "issues", namespace: "tracker" })`,
+      runtime.execute(`return await tools.$codemode.search({ query: "issues", namespace: "tracker" })`),
-    ))
+    )
    expect(plural.ok).toBe(true)
    if (plural.ok) {
      const value = plural.value as { items: Array<{ path: string }>; total: number }
@@ -836,14 +919,15 @@ describe("CodeMode public contract", () => {
    }
    // ...while a true "issues" path match still outranks the singular-only description match.
-    const ranked = await Effect.runPromise(runtime.execute(
+    const ranked = await Effect.runPromise(runtime.execute(`return await tools.$codemode.search({ query: "issues" })`))
      `return await tools.$codemode.search({ query: "issues" })`,
    ))
    expect(ranked.ok).toBe(true)
    if (ranked.ok) {
      const value = ranked.value as { items: Array<{ path: string }>; total: number }
      expect(value.total).toBe(2)
-      expect(value.items.map((item) => item.path)).toStrictEqual(["tools.github.list_issues", "tools.tracker.fetch_all"])
+      expect(value.items.map((item) => item.path)).toStrictEqual([
        "tools.github.list_issues",
        "tools.tracker.fetch_all",
      ])
    }
  })
@@ -882,8 +966,12 @@ describe("CodeMode public contract", () => {
      run: () => Effect.succeed("ok"),
    })
    const expensive = Tool.make({
-      description: "An expensive tool whose description alone consumes far more than the remaining inline catalog byte budget for this runtime",
+      description:
-      input: Schema.Struct({ someRatherLongParameterName: Schema.String, anotherEvenLongerParameterName: Schema.Number }),
+        "An expensive tool whose description alone consumes far more than the remaining inline catalog byte budget for this runtime",
      input: Schema.Struct({
        someRatherLongParameterName: Schema.String,
        anotherEvenLongerParameterName: Schema.Number,
      }),
      output: Schema.String,
      run: () => Effect.succeed("ok"),
    })
@@ -896,7 +984,9 @@ describe("CodeMode public contract", () => {
    })
    const instructions = runtime.instructions()
-    expect(instructions).toContain("Available tools (PARTIAL — 2 of 3 shown; find the rest with tools.$codemode.search)")
+    expect(instructions).toContain(
      "Available tools (PARTIAL — 2 of 3 shown; find the rest with tools.$codemode.search)",
    )
    expect(instructions).toContain("- alpha (2 tools, 1 shown)")
    expect(instructions).toContain("  - tools.alpha.cheap(input: { q: string }): Promise<string> // Cheap")
    expect(instructions).not.toContain("tools.alpha.expensive(")
@@ -912,7 +1002,8 @@ describe("CodeMode public contract", () => {
      description: "Double a number",
      input: Schema.Struct({ value: Schema.NumberFromString }),
      output: Schema.NumberFromString,
-      run: ({ value }) => Effect.sync(() => {
+      run: ({ value }) =>
        Effect.sync(() => {
          observed.push(value)
          return String(value * 2)
        }),
@@ -934,9 +1025,11 @@ describe("CodeMode public contract", () => {
  })
  test("returns JSON-safe data and normalizes undefined to null", async () => {
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        code: `return { top: undefined, nested: [1, undefined] }`,
-    }))
+      }),
    )
    expect(result).toStrictEqual({
      ok: true,
      value: { top: null, nested: [1, null] },
@@ -947,18 +1040,20 @@ describe("CodeMode public contract", () => {
  test("rejects invalid configuration and discovery limits", async () => {
    expect(() => CodeMode.execute({ code: "return 1", limits: { timeoutMs: 0 } })).toThrow(RangeError)
-    expect(() => CodeMode.execute({ code: "return 1", limits: { timeoutMs: Number.POSITIVE_INFINITY } })).toThrow(RangeError)
+    expect(() => CodeMode.execute({ code: "return 1", limits: { timeoutMs: Number.POSITIVE_INFINITY } })).toThrow(
      RangeError,
    )
    expect(() => CodeMode.execute({ code: "return 1", limits: { maxToolCalls: -1 } })).toThrow(RangeError)
    expect(() => CodeMode.execute({ code: "return 1", limits: { maxOutputBytes: -1 } })).toThrow(RangeError)
    expect(() => CodeMode.make({ tools, discovery: { maxInlineCatalogTokens: -1 } })).toThrow(RangeError)
-    const result = await Effect.runPromise(CodeMode.make({
+    const result = await Effect.runPromise(
      CodeMode.make({
        tools,
        discovery: { maxInlineCatalogTokens: 0 },
-    }).execute(
+      }).execute(`return await tools.$codemode.search({ query: "order", limit: 0.5 })`),
-      `return await tools.$codemode.search({ query: "order", limit: 0.5 })`,
+    )
    ))
    expect(result.ok).toBe(false)
    if (result.ok) return
    expect(result.error.kind).toBe("InvalidToolInput")
@@ -979,14 +1074,16 @@ describe("CodeMode public contract", () => {
      output: Schema.Number,
      run: () => Effect.succeed(1),
    })
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        tools: { host: { count: counter } },
        code: `
        let total = 0
        for (let i = 0; i < 150; i += 1) total += await tools.host.count({})
        return total
      `,
-    }))
+      }),
    )
    expect(result).toMatchObject({ ok: true, value: 150 })
    if (result.ok) expect(result.toolCalls.length).toBe(150)
  })
@@ -1008,8 +1105,6 @@ describe("CodeMode public contract", () => {
  })
  test("reserves the discovery namespace", () => {
-    expect(() => CodeMode.make({ tools: { $codemode: { lookup } } })).toThrow(
+    expect(() => CodeMode.make({ tools: { $codemode: { lookup } } })).toThrow(/reserved for CodeMode discovery tools/)
      /reserved for CodeMode discovery tools/,
    )
  })
 })
@@ -36,10 +36,12 @@ const error = async (code: string) => {
 describe("Object.keys over tool references", () => {
  test("enumerates top-level namespaces (the transcript program)", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const namespaces = Object.keys(tools)
      return { namespaces, count: namespaces.length }
-    `)).toEqual({ namespaces: ["github", "memory", "playwright"], count: 3 })
+    `),
    ).toEqual({ namespaces: ["github", "memory", "playwright"], count: 3 })
  })
  test("enumerates tool names at a nested namespace", async () => {
@@ -92,7 +94,8 @@ describe("Object.keys over arrays", () => {
 describe("for...in", () => {
  test("iterates own enumerable keys of a plain object with break/continue", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const seen = []
      for (const key in { a: 1, b: 2, c: 3, d: 4 }) {
        if (key === "b") continue
@@ -100,41 +103,50 @@ describe("for...in", () => {
        seen.push(key)
      }
      return seen
-    `)).toEqual(["a", "c"])
+    `),
    ).toEqual(["a", "c"])
  })
  test("iterates index strings over arrays", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const indexes = []
      for (const i in ["x", "y", "z"]) {
        if (i === "2") break
        indexes.push(i)
      }
      return indexes
-    `)).toEqual(["0", "1"])
+    `),
    ).toEqual(["0", "1"])
  })
  test("supports let declarations and bare identifiers", async () => {
-    expect(await value(`
+    expect(
      await value(`
      let last = ""
      for (let key in { a: 1, b: 2 }) last = key
      return last
-    `)).toBe("b")
+    `),
-    expect(await value(`
+    ).toBe("b")
    expect(
      await value(`
      let key = "before"
      for (key in { only: 1 }) {}
      return key
-    `)).toBe("only")
+    `),
    ).toBe("only")
  })
  test("enumerates namespaces and tools from the host tool tree", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const names = []
      for (const ns in tools) {
        for (const name in tools[ns]) names.push(ns + "." + name)
      }
      return names
-    `)).toEqual(["github.list_issues", "github.get_issue", "memory.search", "playwright.navigate"])
+    `),
    ).toEqual(["github.list_issues", "github.get_issue", "memory.search", "playwright.navigate"])
  })
  test("unsupported values fail with a hint at for...of and Object.keys", async () => {
@@ -143,21 +143,40 @@ describe("H1: NaN/Infinity flow as intermediates and normalize to null at the bo
 describe("Error values and instanceof", () => {
  test("new Error carries name/message and is instanceof Error", async () => {
-    expect(await value(`const e = new Error("boom"); return [e instanceof Error, e.name, e.message]`)).toEqual([true, "Error", "boom"])
+    expect(await value(`const e = new Error("boom"); return [e instanceof Error, e.name, e.message]`)).toEqual([
      true,
      "Error",
      "boom",
    ])
  })
  test("Error without new behaves like new Error", async () => {
-    expect(await value(`const e = Error("plain"); return [e instanceof Error, e.name, e.message]`)).toEqual([true, "Error", "plain"])
+    expect(await value(`const e = Error("plain"); return [e instanceof Error, e.name, e.message]`)).toEqual([
-    expect(await value(`const e = new Error(); return [e.name, e.message, e instanceof Error]`)).toEqual(["Error", "", true])
+      true,
      "Error",
      "plain",
    ])
    expect(await value(`const e = new Error(); return [e.name, e.message, e instanceof Error]`)).toEqual([
      "Error",
      "",
      true,
    ])
  })
  test("specific error types are instanceof themselves and Error, not each other", async () => {
-    expect(await value(`const e = new TypeError("t"); return [e instanceof TypeError, e instanceof Error, e instanceof RangeError]`)).toEqual([true, true, false])
+    expect(
      await value(
        `const e = new TypeError("t"); return [e instanceof TypeError, e instanceof Error, e instanceof RangeError]`,
      ),
    ).toEqual([true, true, false])
    expect(await value(`return new Error("e") instanceof TypeError`)).toBe(false)
  })
  test("thrown errors keep instanceof through try/catch", async () => {
-    expect(await value(`try { throw new Error("x") } catch (e) { return [e instanceof Error, e.message] }`)).toEqual([true, "x"])
+    expect(await value(`try { throw new Error("x") } catch (e) { return [e instanceof Error, e.message] }`)).toEqual([
      true,
      "x",
    ])
  })
  test("interpreter runtime failures are caught as Error values", async () => {
@@ -168,33 +187,48 @@ describe("Error values and instanceof", () => {
  test("caught failures carry the constructor name the real-JS failure would have", async () => {
    // JSON.parse throws SyntaxError: name and specific-instanceof both carry through, and the
    // message keeps the engine's position detail.
-    expect(await value(`
+    expect(
      await value(`
      try { JSON.parse("{oops") } catch (e) {
        return [e.name, e instanceof SyntaxError, e instanceof Error, e instanceof TypeError, e.message.includes("JSON")]
      }
-    `)).toEqual(["SyntaxError", true, true, false, true])
+    `),
-    expect(await value(`try { undeclared() } catch (e) { return [e.name, e instanceof ReferenceError] }`))
+    ).toEqual(["SyntaxError", true, true, false, true])
-      .toEqual(["ReferenceError", true])
+    expect(await value(`try { undeclared() } catch (e) { return [e.name, e instanceof ReferenceError] }`)).toEqual([
-    expect(await value(`try { const c = 1; c = 2 } catch (e) { return [e.name, e instanceof TypeError] }`))
+      "ReferenceError",
-      .toEqual(["TypeError", true])
+      true,
-    expect(await value(`try { "a".normalize("NOPE") } catch (e) { return [e.name, e instanceof RangeError] }`))
+    ])
-      .toEqual(["RangeError", true])
+    expect(await value(`try { const c = 1; c = 2 } catch (e) { return [e.name, e instanceof TypeError] }`)).toEqual([
-    expect(await value(`try { "a".match("(") } catch (e) { return [e.name, e instanceof SyntaxError] }`))
+      "TypeError",
-      .toEqual(["SyntaxError", true])
+      true,
-    expect(await value(`try { new RegExp("(") } catch (e) { return [e.name, e instanceof SyntaxError] }`))
+    ])
-      .toEqual(["SyntaxError", true])
+    expect(await value(`try { "a".normalize("NOPE") } catch (e) { return [e.name, e instanceof RangeError] }`)).toEqual(
      ["RangeError", true],
    )
    expect(await value(`try { "a".match("(") } catch (e) { return [e.name, e instanceof SyntaxError] }`)).toEqual([
      "SyntaxError",
      true,
    ])
    expect(await value(`try { new RegExp("(") } catch (e) { return [e.name, e instanceof SyntaxError] }`)).toEqual([
      "SyntaxError",
      true,
    ])
  })
  test("diagnostics without a specific real-JS analogue are named plain Error", async () => {
-    expect(await value(`try { JSON.parse(5) } catch (e) { return [e.name, e instanceof Error] }`))
+    expect(await value(`try { JSON.parse(5) } catch (e) { return [e.name, e instanceof Error] }`)).toEqual([
-      .toEqual(["Error", true])
+      "Error",
      true,
    ])
  })
  test("Promise.allSettled rejection reasons are Error values", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const settled = await Promise.allSettled([Promise.reject(new Error("b"))])
      return [settled[0].reason instanceof Error, settled[0].reason.message]
-    `)).toEqual([true, "b"])
+    `),
    ).toEqual([true, "b"])
  })
  test("non-error thrown values are not instanceof Error", async () => {
@@ -203,7 +237,11 @@ describe("Error values and instanceof", () => {
  })
  test("plain data is never instanceof Error", async () => {
-    expect(await value(`return [({}) instanceof Error, "s" instanceof Error, null instanceof Error]`)).toEqual([false, false, false])
+    expect(await value(`return [({}) instanceof Error, "s" instanceof Error, null instanceof Error]`)).toEqual([
      false,
      false,
      false,
    ])
  })
  test("error values still serialize as plain { name, message } data", async () => {
@@ -227,17 +265,29 @@ describe("Error values and instanceof", () => {
 describe("array methods: splice, fill, copyWithin, keys/values/entries", () => {
  test("splice removes in place and returns the removed elements", async () => {
-    expect(await value(`const a = [1,2,3,4]; const removed = a.splice(1, 2); return { removed, a }`)).toEqual({ removed: [2, 3], a: [1, 4] })
+    expect(await value(`const a = [1,2,3,4]; const removed = a.splice(1, 2); return { removed, a }`)).toEqual({
      removed: [2, 3],
      a: [1, 4],
    })
  })
  test("splice inserts new elements at the cut", async () => {
    expect(await value(`const a = ["a","d"]; a.splice(1, 0, "b", "c"); return a`)).toEqual(["a", "b", "c", "d"])
-    expect(await value(`const a = [1,2,3]; const removed = a.splice(1, 1, "x"); return { removed, a }`)).toEqual({ removed: [2], a: [1, "x", 3] })
+    expect(await value(`const a = [1,2,3]; const removed = a.splice(1, 1, "x"); return { removed, a }`)).toEqual({
      removed: [2],
      a: [1, "x", 3],
    })
  })
  test("splice with one argument removes to the end; negative start counts back", async () => {
-    expect(await value(`const a = [1,2,3]; const removed = a.splice(1); return { removed, a }`)).toEqual({ removed: [2, 3], a: [1] })
+    expect(await value(`const a = [1,2,3]; const removed = a.splice(1); return { removed, a }`)).toEqual({
-    expect(await value(`const a = [1,2,3]; const removed = a.splice(-1); return { removed, a }`)).toEqual({ removed: [3], a: [1, 2] })
+      removed: [2, 3],
      a: [1],
    })
    expect(await value(`const a = [1,2,3]; const removed = a.splice(-1); return { removed, a }`)).toEqual({
      removed: [3],
      a: [1, 2],
    })
  })
  test("splice rejects inserting a container into itself", async () => {
@@ -258,11 +308,13 @@ describe("array methods: splice, fill, copyWithin, keys/values/entries", () => {
  test("keys/values/entries return arrays usable with for...of and spread", async () => {
    expect(await value(`return [...["x","y","z"].keys()]`)).toEqual([0, 1, 2])
    expect(await value(`return ["x","y"].values()`)).toEqual(["x", "y"])
-    expect(await value(`
+    expect(
      await value(`
      const out = []
      for (const [index, item] of ["a","b"].entries()) out.push(index + ":" + item)
      return out
-    `)).toEqual(["0:a", "1:b"])
+    `),
    ).toEqual(["0:a", "1:b"])
    expect(await value(`return [...[7].entries()]`)).toEqual([[0, 7]])
  })
 })
@@ -300,40 +352,33 @@ describe("compound assignment matches its binary operator", () => {
  }
  test("sandbox Date += concatenates its string form, like d = d + 1", async () => {
-    const result = await pair(
+    const result = await pair(`let d = new Date(1000); d += 1; return d`, `let d = new Date(1000); d = d + 1; return d`)
      `let d = new Date(1000); d += 1; return d`,
      `let d = new Date(1000); d = d + 1; return d`,
    )
    expect(result).toBe("1970-01-01T00:00:01.000Z1")
  })
  test("sandbox Date numeric compound ops use its time value", async () => {
-    expect(await pair(
+    expect(
-      `let d = new Date(1000); d -= 400; return d`,
+      await pair(`let d = new Date(1000); d -= 400; return d`, `let d = new Date(1000); d = d - 400; return d`),
-      `let d = new Date(1000); d = d - 400; return d`,
+    ).toBe(600)
-    )).toBe(600)
+    expect(await pair(`let d = new Date(1000); d /= 4; return d`, `let d = new Date(1000); d = d / 4; return d`)).toBe(
-    expect(await pair(
+      250,
-      `let d = new Date(1000); d /= 4; return d`,
+    )
      `let d = new Date(1000); d = d / 4; return d`,
    )).toBe(250)
  })
  test("string += object/array matches x = x + obj", async () => {
-    expect(await pair(
+    expect(await pair(`let x = "a"; x += { b: 1 }; return x`, `let x = "a"; x = x + { b: 1 }; return x`)).toBe(
-      `let x = "a"; x += { b: 1 }; return x`,
+      "a[object Object]",
-      `let x = "a"; x = x + { b: 1 }; return x`,
+    )
-    )).toBe("a[object Object]")
+    expect(await pair(`let x = "a"; x += [1, 2]; return x`, `let x = "a"; x = x + [1, 2]; return x`)).toBe("a1,2")
    expect(await pair(
      `let x = "a"; x += [1, 2]; return x`,
      `let x = "a"; x = x + [1, 2]; return x`,
    )).toBe("a1,2")
  })
  test("compound assignment through a member target coerces the same way", async () => {
-    expect(await pair(
+    expect(
      await pair(
        `const o = { s: "t" }; o.s += new Date(0); return o.s`,
        `const o = { s: "t" }; o.s = o.s + new Date(0); return o.s`,
-    )).toBe("t1970-01-01T00:00:00.000Z")
+      ),
    ).toBe("t1970-01-01T00:00:00.000Z")
  })
  test("numeric and string compound operators sweep identically to their expansions", async () => {
@@ -23,7 +23,7 @@ const sleepyTool = (trace: Trace) =>
    input: Schema.Struct({ id: Schema.Number, ms: Schema.optionalKey(Schema.Number) }),
    output: Schema.Number,
    run: ({ id, ms }) =>
-      Effect.gen(function*() {
+      Effect.gen(function* () {
        trace.starts.push(id)
        trace.active += 1
        trace.maxActive = Math.max(trace.maxActive, trace.active)
@@ -31,10 +31,14 @@ const sleepyTool = (trace: Trace) =>
        trace.active -= 1
        trace.completed += 1
        return id
-      }).pipe(Effect.onInterrupt(() => Effect.sync(() => {
+      }).pipe(
        Effect.onInterrupt(() =>
          Effect.sync(() => {
            trace.active -= 1
            trace.interrupted += 1
-      }))),
+          }),
        ),
      ),
  })
 const failingTool = Tool.make({
@@ -46,11 +50,13 @@ const failingTool = Tool.make({
 const run = (code: string, options: { trace?: Trace; limits?: ExecutionLimits } = {}): Promise<ExecuteResult> => {
  const trace = options.trace ?? makeTrace()
-  return Effect.runPromise(CodeMode.execute({
+  return Effect.runPromise(
    CodeMode.execute({
      tools: { host: { sleepy: sleepyTool(trace), fail: failingTool } },
      code,
      ...(options.limits ? { limits: options.limits } : {}),
-  }))
+    }),
  )
 }
 const value = async (code: string, options: { trace?: Trace; limits?: ExecutionLimits } = {}) => {
@@ -121,7 +127,8 @@ describe("first-class promise values", () => {
  })
  test("an awaited failure is catchable exactly like a synchronous throw", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const p = tools.host.fail({})
      try {
        await p
@@ -129,7 +136,8 @@ describe("first-class promise values", () => {
      } catch (e) {
        return e.message
      }
-    `)).toBe("Lookup refused")
+    `),
    ).toBe("Lookup refused")
  })
  test("a fire-and-forget call completes before the execution ends", async () => {
@@ -186,20 +194,24 @@ describe("promises at data boundaries", () => {
 describe("Promise.all over arbitrary arrays", () => {
  test("mixes promises and plain values, preserving order", async () => {
-    expect(await value(`
+    expect(
      await value(`
      return await Promise.all([tools.host.sleepy({ id: 1 }), "plain", tools.host.sleepy({ id: 2 }), 42])
-    `)).toEqual([1, "plain", 2, 42])
+    `),
    ).toEqual([1, "plain", 2, 42])
  })
  test("accepts arrays built beforehand, passed as identifiers, and spread elements", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const calls = []
      calls.push(tools.host.sleepy({ id: 1 }))
      calls.push(7)
      const more = [tools.host.sleepy({ id: 2 })]
      const batch = [...calls, ...more, "x"]
      return await Promise.all(batch)
-    `)).toEqual([1, 7, 2, "x"])
+    `),
    ).toEqual([1, 7, 2, "x"])
  })
  test("runs items.map tool calls in parallel", async () => {
@@ -238,14 +250,16 @@ describe("Promise.all over arbitrary arrays", () => {
  })
  test("rejects with the first failure, catchable in-program", async () => {
-    expect(await value(`
+    expect(
      await value(`
      try {
        await Promise.all([tools.host.sleepy({ id: 1 }), tools.host.fail({})])
        return "no"
      } catch (e) {
        return e.message
      }
-    `)).toBe("Lookup refused")
+    `),
    ).toBe("Lookup refused")
  })
  test("a non-collection argument is a clear error", async () => {
@@ -264,14 +278,16 @@ describe("Promise.all over arbitrary arrays", () => {
 describe("Promise.allSettled", () => {
  test("reports fulfilled and rejected outcomes with catch-normalized reasons", async () => {
-    expect(await value(`
+    expect(
      await value(`
      return await Promise.allSettled([
        tools.host.sleepy({ id: 5 }),
        tools.host.fail({}),
        "plain",
        Promise.reject(new Error("boom")),
      ])
-    `)).toEqual([
+    `),
    ).toEqual([
      { status: "fulfilled", value: 5 },
      { status: "rejected", reason: { name: "Error", message: "Lookup refused" } },
      { status: "fulfilled", value: "plain" },
@@ -306,7 +322,8 @@ describe("Promise.race", () => {
  })
  test("awaiting an interrupted loser afterwards is a catchable program failure", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const fast = tools.host.sleepy({ id: 1, ms: 10 })
      const slow = tools.host.sleepy({ id: 2, ms: 5000 })
      const winner = await Promise.race([fast, slow])
@@ -316,23 +333,31 @@ describe("Promise.race", () => {
      } catch (e) {
        return { winner, caught: e.message }
      }
-    `)).toEqual({ winner: 1, caught: "This tool call was interrupted because another value settled a Promise.race first." })
+    `),
    ).toEqual({
      winner: 1,
      caught: "This tool call was interrupted because another value settled a Promise.race first.",
    })
  })
  test("a rejection can win the race", async () => {
-    expect(await value(`
+    expect(
      await value(`
      try {
        await Promise.race([tools.host.fail({}), tools.host.sleepy({ id: 1, ms: 5000 })])
        return "no"
      } catch (e) {
        return e.message
      }
-    `)).toBe("Lookup refused")
+    `),
    ).toBe("Lookup refused")
  })
  test("a plain value wins over pending promises", async () => {
    const trace = makeTrace()
-    expect(await value(`return await Promise.race([tools.host.sleepy({ id: 1, ms: 5000 }), "immediate"])`, { trace })).toBe("immediate")
+    expect(
      await value(`return await Promise.race([tools.host.sleepy({ id: 1, ms: 5000 }), "immediate"])`, { trace }),
    ).toBe("immediate")
    expect(trace.interrupted).toBe(1)
  })
@@ -350,14 +375,16 @@ describe("Promise.resolve / Promise.reject", () => {
  })
  test("reject produces a promise whose await throws the reason", async () => {
-    expect(await value(`
+    expect(
      await value(`
      try {
        await Promise.reject("nope")
        return "no"
      } catch (e) {
        return e
      }
-    `)).toBe("nope")
+    `),
    ).toBe("nope")
  })
 })
@@ -83,15 +83,9 @@ describe("pretty signature rendering", () => {
      true,
    )
    expect(pretty).toBe(
-      [
+      ["{", "  /** Search filter */", "  filter?: {", "    /** Issue state */", "    state?: string", "  }", "}"].join(
-        "{",
+        "\n",
-        "  /** Search filter */",
+      ),
        "  filter?: {",
        "    /** Issue state */",
        "    state?: string",
        "  }",
        "}",
      ].join("\n"),
    )
  })
@@ -119,7 +113,14 @@ describe("pretty signature rendering", () => {
    expect(pretty).toContain("  /** @deprecated */\n  legacy?: string")
    expect(pretty).toContain("  /** @format uri */\n  homepage?: string")
    expect(pretty).toContain(
-      ["  /**", '   * @default ["a","b"]', "   * @minItems 2", "   * @maxItems 5", "   */", "  tags?: Array<string>"].join("\n"),
+      [
        "  /**",
        '   * @default ["a","b"]',
        "   * @minItems 2",
        "   * @maxItems 5",
        "   */",
        "  tags?: Array<string>",
      ].join("\n"),
    )
  })
@@ -212,7 +213,11 @@ describe("non-identifier property names render as quoted keys", () => {
    const tool = Tool.make({
      description: "Adapter tool with awkward field names",
      input: rawSchema,
-      output: { type: "object", properties: { "content-type": { type: "string" } }, required: ["content-type"] } as const,
+      output: {
        type: "object",
        properties: { "content-type": { type: "string" } },
        required: ["content-type"],
      } as const,
      run: () => Effect.succeed({ "content-type": "text/plain" }),
    })
    expect(inputTypeScript(tool)).toContain('"foo-bar"?: string')
@@ -269,9 +274,9 @@ describe("pretty signatures in search results", () => {
  const runtime = CodeMode.make({ tools: { github: { list_issues: listIssues }, orders: { lookup: lookupOrder } } })
  const search = async (query: string) => {
-    const result = await Effect.runPromise(runtime.execute(
+    const result = await Effect.runPromise(
-      `return await tools.$codemode.search({ query: ${JSON.stringify(query)} })`,
+      runtime.execute(`return await tools.$codemode.search({ query: ${JSON.stringify(query)} })`),
-    ))
+    )
    expect(result.ok).toBe(true)
    if (!result.ok) throw new Error("search failed")
    return result.value as { items: Array<{ path: string; signature: string }>; total: number }
@@ -40,7 +40,11 @@ describe("Date", () => {
  })
  test("UTC getters read calendar components", async () => {
-    expect(await value(`const d = new Date("2024-03-05T06:07:08.009Z"); return [d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate(), d.getUTCHours(), d.getUTCMinutes(), d.getUTCSeconds(), d.getUTCMilliseconds()]`)).toEqual([2024, 2, 5, 6, 7, 8, 9])
+    expect(
      await value(
        `const d = new Date("2024-03-05T06:07:08.009Z"); return [d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate(), d.getUTCHours(), d.getUTCMinutes(), d.getUTCSeconds(), d.getUTCMilliseconds()]`,
      ),
    ).toEqual([2024, 2, 5, 6, 7, 8, 9])
  })
  test("invalid dates yield NaN times, guardable in-sandbox", async () => {
@@ -49,7 +53,9 @@ describe("Date", () => {
  })
  test("toISOString on an invalid date is a catchable error", async () => {
-    expect(await value(`try { new Date("garbage").toISOString(); return "no" } catch { return "caught" }`)).toBe("caught")
+    expect(await value(`try { new Date("garbage").toISOString(); return "no" } catch { return "caught" }`)).toBe(
      "caught",
    )
  })
  test("template interpolation renders the ISO form", async () => {
@@ -72,14 +78,18 @@ describe("Date", () => {
  })
  test("sorting dates with a numeric comparator", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const dates = [new Date(3000), new Date(1000), new Date(2000)]
      return dates.sort((a, b) => a - b).map((d) => d.getTime())
-    `)).toEqual([1000, 2000, 3000])
+    `),
    ).toEqual([1000, 2000, 3000])
  })
  test("new Date(year, month, day) accepts component form", async () => {
-    expect(await value(`const d = new Date(2024, 0, 2); return [d.getFullYear(), d.getMonth(), d.getDate()]`)).toEqual([2024, 0, 2])
+    expect(await value(`const d = new Date(2024, 0, 2); return [d.getFullYear(), d.getMonth(), d.getDate()]`)).toEqual([
      2024, 0, 2,
    ])
  })
  test("typeof and unknown properties are forgiving", async () => {
@@ -95,25 +105,31 @@ describe("RegExp", () => {
  })
  test("exec exposes captures and index", async () => {
-    expect(await value(`const m = /a(b+)/.exec("xxabbc"); return { full: m[0], group: m[1], index: m.index }`)).toEqual({
+    expect(await value(`const m = /a(b+)/.exec("xxabbc"); return { full: m[0], group: m[1], index: m.index }`)).toEqual(
      {
        full: "abb",
        group: "bb",
        index: 2,
-    })
+      },
    )
    expect(await value(`return /a/.exec("zzz")`)).toBeNull()
  })
  test("named groups read through", async () => {
-    expect(await value(`const m = /(?<word>[a-z]+)-(?<num>\\d+)/.exec("id ab-42"); return m.groups.word + m.groups.num`)).toBe("ab42")
+    expect(
      await value(`const m = /(?<word>[a-z]+)-(?<num>\\d+)/.exec("id ab-42"); return m.groups.word + m.groups.num`),
    ).toBe("ab42")
  })
  test("global exec advances lastIndex across calls", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const r = /\\d+/g
      const first = r.exec("a1b22c")
      const second = r.exec("a1b22c")
      return [first[0], second[0]]
-    `)).toEqual(["1", "22"])
+    `),
    ).toEqual(["1", "22"])
  })
  test("string match: non-global carries index, global lists all matches", async () => {
@@ -194,34 +210,51 @@ describe("RegExp", () => {
 describe("Map", () => {
  test("get/set/has/size with chaining", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const m = new Map()
      m.set("a", 1).set("b", 2)
      return { a: m.get("a"), b: m.get("b"), has: m.has("a"), miss: m.get("zz") === undefined, size: m.size }
-    `)).toEqual({ a: 1, b: 2, has: true, miss: true, size: 5 - 3 })
+    `),
    ).toEqual({ a: 1, b: 2, has: true, miss: true, size: 5 - 3 })
  })
  test("object keys use identity", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const key = { id: 1 }
      const m = new Map()
      m.set(key, "hit")
      return [m.get(key), m.get({ id: 1 }) === undefined]
-    `)).toEqual(["hit", true])
+    `),
    ).toEqual(["hit", true])
  })
  test("construction from entry pairs and another Map", async () => {
    expect(await value(`const m = new Map([["a", 1], ["b", 2]]); return m.get("b")`)).toBe(2)
-    expect(await value(`const m = new Map([["a", 1]]); const n = new Map(m); n.set("b", 2); return [n.get("a"), n.get("b"), m.has("b")]`)).toEqual([1, 2, false])
+    expect(
      await value(
        `const m = new Map([["a", 1]]); const n = new Map(m); n.set("b", 2); return [n.get("a"), n.get("b"), m.has("b")]`,
      ),
    ).toEqual([1, 2, false])
    expect((await error(`return new Map("nope")`)).message).toMatch(/\[key, value\] pairs/)
    expect((await error(`return new Map(["flat"])`)).message).toMatch(/\[key, value\] pairs/)
  })
  test("keys/values/entries return arrays", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const m = new Map([["a", 1], ["b", 2]])
      return { keys: m.keys(), values: m.values(), entries: m.entries() }
-    `)).toEqual({ keys: ["a", "b"], values: [1, 2], entries: [["a", 1], ["b", 2]] })
+    `),
    ).toEqual({
      keys: ["a", "b"],
      values: [1, 2],
      entries: [
        ["a", 1],
        ["b", 2],
      ],
    })
  })
  test("Object.fromEntries(map) and Array.from(map)", async () => {
@@ -230,13 +263,15 @@ describe("Map", () => {
  })
  test("for...of iterates [key, value] pairs with destructuring", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const m = new Map([["a", 1], ["b", 2]])
      let total = 0
      let names = ""
      for (const [key, count] of m) { names += key; total += count }
      return names + total
-    `)).toBe("ab3")
+    `),
    ).toBe("ab3")
  })
  test("spread produces entry pairs", async () => {
@@ -244,32 +279,38 @@ describe("Map", () => {
  })
  test("forEach passes (value, key)", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const m = new Map([["a", 1], ["b", 2]])
      const seen = []
      m.forEach((count, key) => seen.push(key + count))
      return seen
-    `)).toEqual(["a1", "b2"])
+    `),
    ).toEqual(["a1", "b2"])
  })
  test("delete and clear", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const m = new Map([["a", 1], ["b", 2]])
      const removed = m.delete("a")
      const missed = m.delete("zz")
      const sizeAfterDelete = m.size
      m.clear()
      return [removed, missed, sizeAfterDelete, m.size]
-    `)).toEqual([true, false, 1, 0])
+    `),
    ).toEqual([true, false, 1, 0])
  })
  test("counting idiom: grouped tallies", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const words = ["a", "b", "a", "c", "a"]
      const counts = new Map()
      for (const word of words) counts.set(word, (counts.get(word) ?? 0) + 1)
      return Object.fromEntries(counts)
-    `)).toEqual({ a: 3, b: 1, c: 1 })
+    `),
    ).toEqual({ a: 3, b: 1, c: 1 })
  })
  test("maps serialize to {} at the boundary, like JSON", async () => {
@@ -286,12 +327,14 @@ describe("Map", () => {
 describe("Set", () => {
  test("add/has/delete/size with chaining", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const s = new Set()
      s.add(1).add(2).add(1)
      const removed = s.delete(2)
      return [s.size, s.has(1), s.has(2), removed]
-    `)).toEqual([1, true, false, true])
+    `),
    ).toEqual([1, true, false, true])
  })
  test("dedupe idiom: [...new Set(items)]", async () => {
@@ -308,11 +351,13 @@ describe("Set", () => {
  })
  test("for...of iterates values", async () => {
-    expect(await value(`
+    expect(
      await value(`
      let total = 0
      for (const n of new Set([1, 2, 3])) total += n
      return total
-    `)).toBe(6)
+    `),
    ).toBe(6)
  })
  test("sets serialize to {} at the boundary, like JSON", async () => {
@@ -338,21 +383,32 @@ describe("stdlib integration", () => {
  })
  test("dates inside Map values survive in-sandbox reads", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const m = new Map([["start", new Date(1000)]])
      return m.get("start").getTime()
-    `)).toBe(1000)
+    `),
    ).toBe(1000)
  })
  test("instanceof recognizes the stdlib value types", async () => {
-    expect(await value(`return [new Date(0) instanceof Date, /a/ instanceof RegExp, new Map() instanceof Map, new Set() instanceof Set]`)).toEqual([true, true, true, true])
+    expect(
-    expect(await value(`return [[1] instanceof Array, [1] instanceof Object, ({}) instanceof Object, 5 instanceof Object]`)).toEqual([true, true, true, false])
+      await value(
        `return [new Date(0) instanceof Date, /a/ instanceof RegExp, new Map() instanceof Map, new Set() instanceof Set]`,
      ),
    ).toEqual([true, true, true, true])
    expect(
      await value(`return [[1] instanceof Array, [1] instanceof Object, ({}) instanceof Object, 5 instanceof Object]`),
    ).toEqual([true, true, true, false])
    expect(await value(`return [new Map() instanceof Set, "s" instanceof Date]`)).toEqual([false, false])
-    expect(await value(`const p = Promise.resolve(1); const isPromise = p instanceof Promise; await p; return isPromise`)).toBe(true)
+    expect(
      await value(`const p = Promise.resolve(1); const isPromise = p instanceof Promise; await p; return isPromise`),
    ).toBe(true)
  })
  test("realistic pipeline: parse, extract with regex, dedupe, count by day", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const raw = '[{"at":"2024-01-01T05:00:00Z","tag":"a b"},{"at":"2024-01-01T09:00:00Z","tag":"b c"},{"at":"2024-01-02T01:00:00Z","tag":"a"}]'
      const rows = JSON.parse(raw)
      const tags = new Set()
@@ -363,27 +419,34 @@ describe("stdlib integration", () => {
        byDay.set(day, (byDay.get(day) ?? 0) + 1)
      }
      return { tags: [...tags].sort((a, b) => (a < b ? -1 : 1)), byDay: Object.fromEntries(byDay) }
-    `)).toEqual({ tags: ["a", "b", "c"], byDay: { "2024-01-01": 2, "2024-01-02": 1 } })
+    `),
    ).toEqual({ tags: ["a", "b", "c"], byDay: { "2024-01-01": 2, "2024-01-02": 1 } })
  })
 })
 describe("sandbox values at intra-sandbox checkpoints", () => {
  test("Object.values/entries keep Dates usable", async () => {
    expect(await value(`return Object.values({ d: new Date(0) })[0].getTime()`)).toBe(0)
-    expect(await value(`const [key, d] = Object.entries({ d: new Date(0) })[0]; return key + ":" + d.getTime()`)).toBe("d:0")
+    expect(await value(`const [key, d] = Object.entries({ d: new Date(0) })[0]; return key + ":" + d.getTime()`)).toBe(
      "d:0",
    )
  })
  test("Object.assign keeps Maps usable", async () => {
-    expect(await value(`const merged = Object.assign({}, { m: new Map([["a", 1]]) }); return merged.m.get("a")`)).toBe(1)
+    expect(await value(`const merged = Object.assign({}, { m: new Map([["a", 1]]) }); return merged.m.get("a")`)).toBe(
      1,
    )
  })
  test("object and array spread keep sandbox values usable", async () => {
-    expect(await value(`
+    expect(
      await value(`
      const src = { m: new Map([["a", 1]]) }
      const copy = { ...src }
      copy.m.set("b", 2)
      return [copy.m.get("a"), src.m.get("b")]
-    `)).toEqual([1, 2])
+    `),
    ).toEqual([1, 2])
    expect(await value(`const list = [new Date(1000)]; const copy = [...list]; return copy[0].getTime()`)).toBe(1000)
  })
@@ -404,7 +467,10 @@ describe("sandbox values at intra-sandbox checkpoints", () => {
  })
  test("the host boundary still serializes JSON forms: results, JSON.stringify, and tool arguments", async () => {
-    expect(await value(`return { d: new Date(0), m: new Map([["a", 1]]) }`)).toEqual({ d: "1970-01-01T00:00:00.000Z", m: {} })
+    expect(await value(`return { d: new Date(0), m: new Map([["a", 1]]) }`)).toEqual({
      d: "1970-01-01T00:00:00.000Z",
      m: {},
    })
    expect(await value(`return JSON.stringify({ d: new Date(0) })`)).toBe('{"d":"1970-01-01T00:00:00.000Z"}')
    const observed: Array<unknown> = []
@@ -417,10 +483,12 @@ describe("sandbox values at intra-sandbox checkpoints", () => {
          return "ok"
        }),
    })
-    const result = await Effect.runPromise(CodeMode.execute({
+    const result = await Effect.runPromise(
      CodeMode.execute({
        tools: { host: { capture } },
        code: `return await tools.host.capture({ when: new Date(0), tags: new Map([["a", 1]]) })`,
-    }))
+      }),
    )
    expect(result.ok).toBe(true)
    expect(observed).toStrictEqual([{ when: "1970-01-01T00:00:00.000Z", tags: {} }])
  })
@@ -206,10 +206,7 @@ export const prepare = Effect.fn("LLMRequestPrep.prepare")(function* (input: Pre
 })
 function resolveTools(input: Pick<PrepareInput, "tools" | "agent" | "permission" | "user">) {
-  const visible = Permission.visibleTools(
+  const visible = Permission.visibleTools(input.tools, Permission.merge(input.agent.permission, input.permission ?? []))
    input.tools,
    Permission.merge(input.agent.permission, input.permission ?? []),
  )
  return Record.filter(visible, (_, k) => input.user.tools?.[k] !== false)
 }
@@ -104,7 +104,8 @@ export function groupByServer(
  const byLongest = [...servers].sort((a, b) => b.length - a.length)
  const groups = new Map<string, CatalogEntry[]>()
  for (const key of Object.keys(mcpTools).sort((a, b) => a.localeCompare(b))) {
-    const server = byLongest.find((name) => key.startsWith(name + "_")) ?? (key.includes("_") ? key.slice(0, key.indexOf("_")) : key)
+    const server =
      byLongest.find((name) => key.startsWith(name + "_")) ?? (key.includes("_") ? key.slice(0, key.indexOf("_")) : key)
    const local = server && key.startsWith(server + "_") ? key.slice(server.length + 1) : key
    const def = mcpDefs[key]
    const entry: CatalogEntry = {
@@ -129,7 +130,9 @@ export function buildCatalog(
  mcpDefs: Record<string, MCPToolDef>,
  servers: readonly string[],
 ): CatalogEntry[] {
-  return [...groupByServer(mcpTools, servers, mcpDefs).values()].flat().filter((entry) => entry.tool.execute !== undefined)
+  return [...groupByServer(mcpTools, servers, mcpDefs).values()]
    .flat()
    .filter((entry) => entry.tool.execute !== undefined)
 }
 /**
@@ -334,7 +337,8 @@ export const CodeModeTool = Tool.define(
        const collect = (attachment: Attachment) => void attachments.push(attachment)
        // Stream the current call list to the UI. Sent on every status change so the
        // tool part shows each child call appearing and resolving while the program runs.
-        const publish = () => ctx.metadata({ title: CODE_MODE_TOOL, metadata: { toolCalls: calls.map((c) => ({ ...c })) } })
+        const publish = () =>
          ctx.metadata({ title: CODE_MODE_TOOL, metadata: { toolCalls: calls.map((c) => ({ ...c })) } })
        // One CodeMode tool per MCP tool, running the same shared middle as legacy
        // per-tool registration (McpInvoke.invoke: plugin before hook → permission
@@ -276,7 +276,10 @@ const layer = Layer.effect(
    // fresh per turn so it tracks live tool-list changes. Hard-denied tools (the shared
    // Permission.visibleTools predicate over the agent's ruleset) never enter the
    // catalog, its inlined signatures, or the in-program search index.
-    const describeCodeMode = Effect.fn("ToolRegistry.describeCodeMode")(function* (agent: Agent.Info, permission?: PermissionV1.Ruleset) {
+    const describeCodeMode = Effect.fn("ToolRegistry.describeCodeMode")(function* (
      agent: Agent.Info,
      permission?: PermissionV1.Ruleset,
    ) {
      const visible = Permission.visibleTools(yield* mcp.tools(), Permission.merge(agent.permission, permission ?? []))
      const servers = Object.keys(yield* mcp.clients()).map(McpCatalog.sanitize)
      return catalogInstructions(visible, yield* mcp.defs(), servers)
@@ -341,7 +344,6 @@ const layer = Layer.effect(
  }),
 )
 function isZodType(value: unknown): value is z.ZodType {
  return typeof value === "object" && value !== null && "_zod" in value
 }
@@ -96,8 +96,7 @@ function resolveTools(trigger?: Plugin.Interface["trigger"]) {
      Layer.mergeAll(
        Layer.mock(Permission.Service, { ask: () => Effect.void }),
        Layer.mock(Plugin.Service, {
-          trigger:
+          trigger: trigger ?? (((_name, _input, output) => Effect.succeed(output)) as Plugin.Interface["trigger"]),
            trigger ?? (((_name, _input, output) => Effect.succeed(output)) as Plugin.Interface["trigger"]),
        }),
        Layer.mock(Truncate.Service, {
          output: (text: string) => Effect.succeed({ content: text, truncated: false as const }),
@@ -21,8 +21,7 @@ import type { Tool as AITool } from "ai"
 import { Effect, Layer } from "effect"
 // A 1x1 transparent PNG, base64-encoded, used to exercise image attachments.
-const PNG =
+const PNG = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYPhfDwAChwGA60e6kgAAAABJRU5ErkJggg=="
  "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYPhfDwAChwGA60e6kgAAAABJRU5ErkJggg=="
 const SERVER = "fixtures"
@@ -163,8 +162,8 @@ async function buildTool() {
  // this real in-memory server listed — the same snapshot shape the live service returns.
  const layer = Layer.mergeAll(
    Layer.mock(Plugin.Service, {
-      trigger: (((_name: unknown, _input: unknown, output: unknown) =>
+      trigger: ((_name: unknown, _input: unknown, output: unknown) =>
-        Effect.succeed(output)) as Plugin.Interface["trigger"]),
+        Effect.succeed(output)) as Plugin.Interface["trigger"],
    }),
    Layer.mock(Truncate.Service, {
      output: (text: string) => Effect.succeed({ content: text, truncated: false as const }),
@@ -196,9 +195,7 @@ describe("code mode integration (real MCP server)", () => {
  test("the appended catalog inlines full signatures with real MCP schemas", () => {
    expect(description).toContain("Available tools (COMPLETE list")
    expect(description).toContain("- fixtures (4 tools)")
-    expect(description).toContain(
+    expect(description).toContain("tools.fixtures.add(input: { a: number; b: number }): Promise<{ sum: number }>")
      "tools.fixtures.add(input: { a: number; b: number }): Promise<{ sum: number }>",
    )
    expect(description).toContain("tools.fixtures.get_text(input: { name: string }): Promise<unknown>")
    expect(description).toContain("// Add two numbers and return the structured sum")
    // Small catalog: everything is inline, so no discovery tool is advertised.
@@ -193,7 +193,9 @@ describe("code mode execute", () => {
    // never cherry-picks a catalog tool or fabricates result fields.
    expect(description).toContain("## Workflow")
    expect(description).toContain("1. Pick a tool from the list under `## Available tools`")
-    expect(description).toContain('`const data = typeof res === "string" ? JSON.parse(res) : res` — most tools return JSON as a string')
+    expect(description).toContain(
      '`const data = typeof res === "string" ? JSON.parse(res) : res` — most tools return JSON as a string',
    )
    expect(description).toContain("Return only the fields you need")
    expect(description).not.toContain("total_count")
  })
@@ -249,7 +251,9 @@ describe("code mode execute", () => {
    expect(description).toContain("tools.$codemode.search(")
    // PARTIAL catalogs put search first in the workflow and advertise namespace browsing.
    expect(description).toContain("1. Find a tool (skip when it is already listed below)")
-    expect(description).toContain('- Browse one namespace: `await tools.$codemode.search({ query: "", namespace: "<name>" })`.')
+    expect(description).toContain(
      '- Browse one namespace: `await tools.$codemode.search({ query: "", namespace: "<name>" })`.',
    )
    expect(description).not.toContain("total_count")
    // All op lines cost the same estimated tokens (chars/4 rounds away the 1- vs 3-digit
    // name difference), so the path tiebreak decides: the lexicographically-first ops made
@@ -290,7 +294,10 @@ describe("code mode execute", () => {
      linear_search: mcpTool("search", () => ""),
    })
    const output = await Effect.runPromise(
-      tool.execute({ code: "const namespaces = Object.keys(tools); return { namespaces, count: namespaces.length }" }, ctx),
+      tool.execute(
        { code: "const namespaces = Object.keys(tools); return { namespaces, count: namespaces.length }" },
        ctx,
      ),
    )
    expect(JSON.parse(output.output)).toEqual({ namespaces: ["github", "linear"], count: 2 })
  })
@@ -565,9 +572,7 @@ describe("code mode execute", () => {
    const tool = await build({
      shot_take: mcpTool("take", () => ({ content: [{ type: "image", data: "PNGDATA", mimeType: "image/png" }] })),
    })
-    const out = await Effect.runPromise(
+    const out = await Effect.runPromise(tool.execute({ code: "await tools.shot.take({}); return 'captured'" }, ctx))
      tool.execute({ code: "await tools.shot.take({}); return 'captured'" }, ctx),
    )
    expect(out.output).toBe("captured")
    expect(out.attachments).toHaveLength(1)
  })
@@ -690,9 +695,7 @@ describe("code mode permission visibility", () => {
    expect(called).toEqual([])
    // The rest of the namespace still works.
-    const allowed = await Effect.runPromise(
+    const allowed = await Effect.runPromise(tool.execute({ code: "return await tools.github.list_issues({})" }, ctx))
      tool.execute({ code: "return await tools.github.list_issues({})" }, ctx),
    )
    expect(allowed.metadata.error).toBeUndefined()
    expect(allowed.output).toBe("ok")
  })
@@ -706,9 +709,7 @@ describe("code mode permission visibility", () => {
      ["github"],
      [askRule("github_list_issues")],
    )
-    const out = await Effect.runPromise(
+    const out = await Effect.runPromise(tool.execute({ code: "return await tools.github.list_issues({})" }, askCtx))
      tool.execute({ code: "return await tools.github.list_issues({})" }, askCtx),
    )
    expect(out.output).toBe("ok")
    expect(asked).toEqual(["github_list_issues"])
  })
@@ -733,16 +734,21 @@ describe("toSandboxResult", () => {
  test("prefers structuredContent over text", () => {
    const { collect } = collector()
-    expect(toSandboxResult({ structuredContent: { x: 1 }, content: [{ type: "text", text: "hi" }] }, collect)).toEqual(
+    expect(toSandboxResult({ structuredContent: { x: 1 }, content: [{ type: "text", text: "hi" }] }, collect)).toEqual({
-      { x: 1 },
+      x: 1,
-    )
+    })
  })
  test("joins text content when no structured content is present", () => {
    const { collect } = collector()
    expect(
      toSandboxResult(
-        { content: [{ type: "text", text: "one" }, { type: "text", text: "two" }] },
+        {
          content: [
            { type: "text", text: "one" },
            { type: "text", text: "two" },
          ],
        },
        collect,
      ),
    ).toBe("one\ntwo")
@@ -2355,7 +2355,13 @@ function Execute(props: ToolProps) {
  return (
    <>
      <InlineTool
-        icon={props.part.state.status === "completed" && !hasRuntimeError() ? "✓" : props.part.state.status === "error" || hasRuntimeError() ? "✗" : "│"}
+        icon={
          props.part.state.status === "completed" && !hasRuntimeError()
            ? "✓"
            : props.part.state.status === "error" || hasRuntimeError()
              ? "✗"
              : "│"
        }
        color={hasRuntimeError() ? theme.error : undefined}
        spinner={isLoading()}
        pending="execute"