Root cause: two proven corruption mechanisms — (M1) non-idempotent apply stamped the same block N times when a quantized model re-emitted the same edit_file call or a turn was retried; (M2) Levenshtein tier 4 was fail-open with no uniqueness guard, silently splicing into the wrong location. Fixes applied at every layer of the pipeline: Matcher (fuzzy-match.ts): raise SIMILARITY_THRESHOLD 0.66 → 0.85; add AMBIGUITY_EPSILON uniqueness guard — two windows within 0.05 of the top score → ambiguous, not a guess; add block-anchor gate (≥3-line needles require first+last line exact match before a window is scored). Edit planner (pending_changes.ts): extract planEdit() as a pure function; idempotency guards detect already-applied states (anchored insert re-stamp, old-gone-but-new-present); findPendingDuplicate() collapses identical pending rows at queue time so M1 never reaches applyOne. Atomic writes (pending_changes.ts): temp-file + rename on the same filesystem so a crash can't leave a half-written source file; realpath() first so symlinks survive the rename. Per-file mutex (pending_changes.ts): withFileLock() serializes concurrent read-modify-write on the same path via a chained-Promise Map. EOL preservation (pending_changes.ts): normalize CRLF → LF for matching, restore native line ending on write so Windows-style files stay clean. Context isolation (inference_context.ts): replace module-level singleton with AsyncLocalStorage so concurrent inference runs (arena parallel dispatch, dispatcher poll racing a user message) each get their own scoped context with no clobbering. Tests: plan-edit.test.ts (pure planEdit unit tests), extended fuzzy-match and pending_changes_integration suites, ALS isolation test that proves overlapping runs get correct session IDs. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
54 lines
2.0 KiB
TypeScript
54 lines
2.0 KiB
TypeScript
/**
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* Permission-gate helpers for native BooCode write tools. The gate comes from
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* the per-run inference context (`ToolContext.permissionMode`):
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* plan — deny the write (read-only); nothing is staged.
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* bypass — apply the staged change immediately (no queue, no approval).
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* ask / undefined — leave it in the pending-changes queue for review.
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*/
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import type { ToolContext } from './types.js';
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import { applyOne } from '../pending_changes.js';
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/** Result returned when a write is denied under Plan (read-only) mode. */
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export function denyReadOnly(operation: string): unknown {
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return {
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status: 'denied',
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operation,
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message: `Read-only (Plan) permission mode — ${operation} is not permitted. Switch to Ask or Bypass to make changes.`,
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};
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}
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/** Finalize a just-staged change per the permission gate: apply now under Bypass,
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* otherwise return it as queued for the human to approve. */
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export async function finalizeWrite(
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context: ToolContext,
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projectRoot: string,
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change: { id: string; file_path: string; operation: string },
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queuedHint: string,
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): Promise<unknown> {
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if (context.permissionMode === 'bypass') {
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const res = await applyOne(context.sql, change.id, projectRoot);
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console.log(
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`[write-gate] bypass apply ${change.operation} ${change.file_path} -> ${res.success ? 'applied' : 'FAILED: ' + (res.error ?? '?')}`,
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);
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return {
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status: res.success ? 'applied' : 'failed',
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change_id: change.id,
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file_path: change.file_path,
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operation: change.operation,
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message: res.success
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? `${change.operation} applied to ${change.file_path}.`
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: `Apply failed for ${change.file_path}: ${res.error ?? 'unknown error'}. Left in the pending queue.`,
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};
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}
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console.log(
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`[write-gate] ${context.permissionMode ?? 'legacy'} queued ${change.operation} ${change.file_path}`,
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);
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return {
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status: 'queued',
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change_id: change.id,
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file_path: change.file_path,
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operation: change.operation,
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message: queuedHint,
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};
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}
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