feat(cli): add ingest LLM rate-limit governor with paced retries (#261)

* feat(cli): add ingest rate limit governor

* feat(cli): wire ingest rate-limit config

* feat(cli): report provider rate-limit signals

* feat(cli): show ingest rate-limit waits

* fix(cli): complete rate-limit event coverage

* fix(cli): abort ingest provider calls cleanly

* fix(cli): propagate ingest cancellation

* fix(cli): reject pre-aborted ingest rate-limit waits

* fix(cli): honor Claude rate-limit reset waits

* fix(cli): retry thrown Codex rate-limit failures

* fix(cli): type Claude rate-limit result details

* fix(cli): emit ingest rate-limit countdowns from rejected signals

* fix(cli): report ai sdk rate-limit header utilization

* fix(cli): gate LLM rate-limit retries on the governor budget

The AI SDK and Codex runtimes retried 429 / opaque rate-limit failures up
to 6-7 times with no backoff when constructed without a RateLimitGovernor
(scan, memory, setup) or with pacing disabled, ignoring Retry-After and
worsening the limit. The outer retry loop only cooperates with the
governor's pause, so without active pacing there is no backoff to apply.

Route the retry bound through a single source: RateLimitGovernor
.maxRetryAttempts(), which returns retry.maxAttempts when enabled and 1
(no outer retry) when absent or disabled. All three runtimes (ai-sdk,
codex, claude-code) now use it, so ingest.rateLimit.retry.maxAttempts
genuinely controls attempts and the hard-coded 6 (plus Codex's off-by-one
extra attempt) is gone. Backend-native retry (e.g. the AI SDK's maxRetries)
still handles transient 429s.

Also correct the ktx.yaml docs for maxWaitMs (caps each wait, not the whole
run) and maxAttempts, and sync uv.lock ktx-sl/ktx-daemon to 0.9.0.

packages/cli/src/context/ingest/ingest-bundle.runner.ts

@@ -3,6 +3,7 @@ import { dirname, join } from 'node:path';
 import pLimit from 'p-limit';
 import { z } from 'zod';
 import { type KtxLogger, noopLogger } from '../../context/core/config.js';
+import type { RateLimitWaitState } from '../../context/llm/rate-limit-governor.js';
 import { createRuntimeToolDescriptorFromAiTool } from '../../context/llm/runtime-tools.js';
 import type { KtxRuntimeToolSet } from '../../context/llm/runtime-port.js';
 import type { CaptureSession, MemoryAction } from '../../context/memory/types.js';
@@ -219,6 +220,10 @@ export class IngestBundleRunner {
   }
 
   async run(job: IngestBundleJob, ctx?: IngestJobContext): Promise<IngestBundleResult> {
+    const unsubscribeRateLimitGovernor = this.subscribeRateLimitGovernor({
+      trace: this.createTrace(job),
+      memoryFlow: ctx?.memoryFlow,
+    });
     const key = job.connectionId;
     const previous = this.chainByConnection.get(key);
     if (previous) {
@@ -241,10 +246,72 @@ export class IngestBundleRunner {
       ctx?.memoryFlow?.finish('error', [sanitizeMemoryFlowError(error)]);
       throw error;
     } finally {
+      unsubscribeRateLimitGovernor();
       await this.maybeEmitIngestProfile(job.jobId);
     }
   }
 
+  private formatRateLimitWait(
+    state: Extract<RateLimitWaitState, { kind: 'wait_tick' | 'wait_started' | 'wait_finished' }>,
+  ): string {
+    const seconds = Math.ceil(state.remainingMs / 1_000);
+    const minutes = Math.floor(seconds / 60);
+    const remainder = seconds % 60;
+    const duration = minutes > 0 ? `${minutes}m${String(remainder).padStart(2, '0')}s` : `${seconds}s`;
+    const type = state.rateLimitType ? ` ${state.rateLimitType}` : '';
+    return `Rate-limited (${state.provider}${type}); resuming in ${duration}; Ctrl+C to stop`;
+  }
+
+  private subscribeRateLimitGovernor(input: {
+    trace: IngestTraceWriter;
+    memoryFlow?: MemoryFlowEventSink;
+  }): () => void {
+    const governor = this.deps.settings.rateLimitGovernor;
+    if (!governor) {
+      return () => undefined;
+    }
+    return governor.subscribe((state: RateLimitWaitState) => {
+      if (state.kind === 'rate_limit_observed') {
+        void input.trace.event('info', 'rate_limit', 'rate_limit_observed', { ...state });
+        return;
+      }
+      if (state.kind === 'concurrency_adjusted') {
+        void input.trace.event('info', 'rate_limit', 'concurrency_adjusted', { ...state });
+        return;
+      }
+      void input.trace.event('info', 'rate_limit', state.kind, { ...state });
+      if (state.kind === 'wait_tick' || state.kind === 'wait_started') {
+        input.memoryFlow?.emit({
+          type: 'rate_limit_wait',
+          provider: state.provider,
+          ...(state.rateLimitType ? { rateLimitType: state.rateLimitType } : {}),
+          resumeAtMs: state.resumeAtMs,
+          remainingMs: state.remainingMs,
+        });
+        input.memoryFlow?.emit({
+          type: 'stage_progress',
+          stage: 'integration',
+          percent: 50,
+          message: this.formatRateLimitWait(state),
+          transient: true,
+        });
+      }
+    });
+  }
+
+  private async withRateLimitWorkSlot<T>(abortSignal: AbortSignal | undefined, fn: () => Promise<T>): Promise<T> {
+    const governor = this.deps.settings.rateLimitGovernor;
+    if (!governor) {
+      return fn();
+    }
+    const release = await governor.acquireWorkSlot(abortSignal);
+    try {
+      return await fn();
+    } finally {
+      release();
+    }
+  }
+
   /**
    * When profiling is enabled — via the `KTX_PROFILE_INGEST` env var or the
    * `ingest.profile` config setting — read the job's trace + tool transcripts
@@ -877,6 +944,7 @@ export class IngestBundleRunner {
     includeContextEvidenceTools: boolean;
     currentTableExists(tableRef: string): Promise<boolean>;
     memoryFlow?: MemoryFlowEventSink;
+    abortSignal?: AbortSignal;
     wuSkillNames: string[];
     onStepFinish?: (info: { stepIndex: number; stepBudget: number }) => void;
   }): Promise<WorkUnitOutcome> {
@@ -1029,6 +1097,7 @@ export class IngestBundleRunner {
         jobId: input.job.jobId,
         toolFailureCount: (unitKey) => input.transcriptSummaries.get(unitKey)?.fatalErrorCount ?? 0,
         onStepFinish: input.onStepFinish,
+        abortSignal: input.abortSignal,
       },
       input.wu,
     );
@@ -1524,7 +1593,8 @@ export class IngestBundleRunner {
         try {
           await Promise.all(
             workUnits.map((wu, index) =>
-              limitWorkUnit(async () => {
+              limitWorkUnit(() =>
+                this.withRateLimitWorkSlot(ctx?.abortSignal, async () => {
                 const outcome = await runIsolatedWorkUnit({
                   unitIndex: index,
                   ingestionBaseSha,
@@ -1532,6 +1602,7 @@ export class IngestBundleRunner {
                   patchDir,
                   trace: runTrace,
                   workUnit: wu,
+                  abortSignal: ctx?.abortSignal,
                   afterSuccess: (child) => copyTransientIngestEvidence(child.workdir, sessionWorktree.workdir),
                   run: async (child) => {
                     const scopedWikiService = this.deps.wikiService.forWorktree(child.workdir);
@@ -1565,6 +1636,7 @@ export class IngestBundleRunner {
                       includeContextEvidenceTools: adapter.evidenceIndexing === 'documents' && !!contextReport,
                       currentTableExists: (tableRef) =>
                         this.tableRefExistsInSemanticLayer(scopedSemanticLayerService, slConnectionIds, tableRef),
+                      abortSignal: ctx?.abortSignal,
                       memoryFlow,
                       wuSkillNames,
                       onStepFinish: ({ stepIndex, stepBudget }) => {
@@ -1594,7 +1666,8 @@ export class IngestBundleRunner {
                   completedWorkUnits / workUnits.length,
                   `${completedWorkUnits} of ${workUnits.length} work units complete`,
                 );
-              }),
+                }),
+              ),
             ),
           );
         } catch (error) {
@@ -1693,6 +1766,7 @@ export class IngestBundleRunner {
                 reason: context.reason,
                 maxAttempts: 1,
                 stepBudget: 12,
+                abortSignal: ctx?.abortSignal,
               });
               emitStageProgress(
                 'integration',
@@ -1714,6 +1788,7 @@ export class IngestBundleRunner {
                 repairKind: 'patch_semantic_gate',
                 maxAttempts: 1,
                 stepBudget: 16,
+                abortSignal: ctx?.abortSignal,
               });
               emitStageProgress(
                 'integration',
@@ -1993,6 +2068,7 @@ export class IngestBundleRunner {
                 );
               }
             : undefined,
+          abortSignal: ctx?.abortSignal,
         });
         curatorReport = curatorOutcome.report;
         curatorWarnings = curatorOutcome.warnings;
@@ -2038,6 +2114,7 @@ export class IngestBundleRunner {
           sourceKey: job.sourceKey,
           jobId: job.jobId,
           force: !!overrideReport,
+          abortSignal: ctx?.abortSignal,
           onStepFinish: stage4
             ? ({ stepIndex, stepBudget }) => {
                 emitStageProgress('reconciliation', 85, `Reconciling results: step ${stepIndex}/${stepBudget}`, {
@@ -2470,6 +2547,7 @@ export class IngestBundleRunner {
           repairKind: 'final_artifact_gate',
           maxAttempts: 1,
           stepBudget: 16,
+          abortSignal: ctx?.abortSignal,
         });
 
         isolatedDiffSummary.gateRepairAttempts += gateRepair.attempts;