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feat: write/edit robustness — fuzzy patch applier + worktree checkpoints (v2.7.1)

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#3 Fuzzy patch applier: new pure fuzzy-match.ts (locateMatch, exact→trim→
unicode-canon→Levenshtein≥0.66, refuse-on-ambiguous) wired into pending_changes
applyOne/rewindOne so local-model whitespace/unicode drift in old_string no
longer loses the edit.

#4 Worktree checkpoint + conversation-trim: checkpoints table + checkpoints.ts
(shadow-commit of tracked+untracked into refs/boocode/checkpoints, hooked into
the 3 external-agent dispatcher paths) + POST restore route (reset --hard +
clean -fd -> transcript trim -> backend-session reset) + "Restore to here" UI.

Built by 3 parallel agents; DB-integration testing caught a created_at
self-deletion bug. Coder suite 234 passing; server+coder build + web tsc clean.
Builds on v2.7.0-mit. openspec write-edit-robustness.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
indifferentketchup
2026-06-01 12:01:57 +00:00
parent 1108d07fb2
commit 59f07e8cb8
15 changed files with 1443 additions and 11 deletions
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29
apps/coder/src/services/dispatcher.ts
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@@ -4,6 +4,7 @@ import type { Broker } from '@boocode/server/broker';
import type { WsFrame } from '@boocode/server/ws-frames';
import type { Config } from '../config.js';
import { createWorktree, diffWorktree, cleanupWorktree, ensureSessionWorktree } from './worktrees.js';
import { createCheckpoint } from './checkpoints.js';
import { makeDcpStreamStripper } from './dcp-strip.js';
import { dispatchViaAcp } from './acp-dispatch.js';
import { getResolvedRegistry } from './provider-config-registry.js';
@@ -358,6 +359,16 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
`;
const assistantId = assistantMsg!.id;
// write-edit-robustness #4: pre-turn worktree checkpoint (best-effort; a
// failure logs and never breaks dispatch). This path uses a per-task worktree
// (createWorktree, not the session worktree), so there's no worktrees-table id
// — pass null for worktreeId, the path is enough for restore's reset.
await createCheckpoint(
sql,
{ chatId, sessionId, worktreeId: null, worktreePath, messageId: assistantId },
{ signal: ac.signal, log },
).catch(() => null);
broker.publishFrame(sessionId, {
type: 'message_started',
message_id: assistantId,
@@ -617,6 +628,15 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
`;
const assistantId = assistantMsg!.id;
// write-edit-robustness #4: pre-turn checkpoint of the persistent session
// worktree (best-effort; never breaks dispatch). worktreeId comes from the
// worktrees table (ensureSessionWorktree above).
await createCheckpoint(
sql,
{ chatId, sessionId, worktreeId, worktreePath, messageId: assistantId },
{ signal: ac.signal, log },
).catch(() => null);
broker.publishFrame(sessionId, {
type: 'message_started',
message_id: assistantId,
@@ -876,6 +896,15 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
`;
const assistantId = assistantMsg!.id;
// write-edit-robustness #4: pre-turn checkpoint of the persistent session
// worktree (best-effort; never breaks dispatch). Same worktree the opencode
// path uses — a chat that switches opencode↔goose↔qwen shares one worktree.
await createCheckpoint(
sql,
{ chatId, sessionId, worktreeId, worktreePath, messageId: assistantId },
{ signal: ac.signal, log },
).catch(() => null);
broker.publishFrame(sessionId, {
type: 'message_started',
message_id: assistantId,