Merge main into offline-write-queue: resolve index.ts, fix stale standup assertion

- index.ts: keep both cache (#3) and queue (#33) exports
- agent.test.ts: #28 landed the standup impl but left agent.test.ts asserting
  standup is notImplemented (its real test moved to query-project.test.ts);
  retarget the unbuilt-view assertion to milestone/runway, which are still stubs

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/core/src/index.ts

@@ -23,6 +23,8 @@ export type {
   GiteaRequestInit,
 } from './gitea/types.js'
 
+export { CACHE_SCHEMA, initCache, readIssue, upsertIssue } from './cache/cache-v0.js'
+export type { CacheDriver } from './cache/cache-v0.js'
 export { affectedIssues, coalesceKey, enqueueWrite, pendingWrites, replayQueue } from './queue/write-queue-v0.js'
 export type { QueuedWrite } from './queue/write-queue-v0.js'
 export { describeChange, isLabelChange, planIssueChange, proposalsFor, summarizeChange } from './changes/apply-changes-v0.js'
@@ -111,6 +113,8 @@ export {
 } from './agent/agent-tools.js'
 export { buildProjectView } from './agent/query-project.js'
 export type { ProjectSnapshot, ProjectView, QueryFilters } from './agent/query-project.js'
+export { activeDirectives, assembleHotContext, estimateTokens, HOT_CONTEXT_BUDGET_TOKENS } from './agent/memory-v0.js'
+export type { HotContextInputs } from './agent/memory-v0.js'
 export { CAPTURE_SYSTEM, captureWork, parseCaptureArgs, PROPOSE_ISSUES_TOOL } from './agent/capture-work.js'
 export type { CaptureProposal, ProposedIssue } from './agent/capture-work.js'