Slice 4 control-plane repairs, lint/catalog cleanup, Flue adapter fixes

Convex control plane (Slices 1-4 prerequisites for Slice 5):
- Versioned Definition/Design persistence: revisions preserve history
  instead of deleting prior slices/approvals
- Fenced conversation turn queue: attempt-numbered leases prevent stale
  worker overwrites; expired turns reconciled by cron
- Fenced Run/Attempt claiming: only queued attempts from running Runs can
  be claimed; lease expiry checks on every finish/checkpoint
- Multi-slice progression: successful slice marks next slice ready instead
  of completing the whole Work; completed Runs blocked from retry
- Typed AttemptClassification in schema and resolver decisions table
- Durable resolver decisions for normal outcomes, cancellation, and
  lease-expiry recovery
- Persistent artifacts and delivery metadata with provenance, source
  revision, verification status, and controlled delivery transitions
- High-impact open questions block definition approval
- Question submission gated to defining/awaiting-approval states only
- Delivery status updates validate JSON metadata before persisting
- Planner failures recorded as durable blocked events
- Approval identity uses canonical tokenIdentifier

Primitives:
- decodeDefinition separates decode from validate
- Design validation enforces 1-4 slices with unique IDs and valid deps
- Artifact and delivery draft schemas with verified-revision binding
- Delivery status transition table

Package management:
- Consolidated shared deps into single catalog (hono, valibot, streamdown,
  @types/react, @types/node, @tailwindcss/*, react-native)
- Removed cross-version Hono boundary: flue() exported as Fetchable
- Deleted bun.lock and regenerated from clean catalog resolution

Lint/format:
- Removed .eslintignore; oxc uses native ignorePatterns in oxlint.config.ts
- Deleted redundant packages/backend/.oxlintrc.json
- Added repos/** and scripts/** to ignore patterns
- Convex-specific rule overrides for ES2022 target constraints
- Fixed all oxc errors in fluePersistence.ts and agents/src/db.ts
- Fixed all formatting across changed files

packages/primitives/package.json

@@ -16,6 +16,7 @@
     "./signal": "./src/signal.ts",
     "./smoke": "./src/smoke.ts",
     "./work": "./src/work.ts",
+    "./work-artifact": "./src/work-artifact.ts",
     "./work-definition": "./src/work-definition.ts",
     "./work-design": "./src/work-design.ts",
     "./work-lifecycle": "./src/work-lifecycle.ts",
@@ -35,7 +36,7 @@
   },
   "devDependencies": {
     "@code/config": "workspace:*",
-    "@types/node": "^22.13.14",
+    "@types/node": "catalog:",
     "typescript": "catalog:",
     "vitest": "catalog:"
   }