Update Python version requirements and fix compatibility issues

- Bump minimum Python version from 3.11 to 3.13 across all apps
- Add Python 3.11-3.13 test matrix to CLI workflow
- Document Python 3.11+ requirement in .env.example
- Fix Starlette Broadcast removal with in-process fallback implementation
- Add _InProcessBroadcast class for tests when Starlette Broadcast is unavailable
- Refactor API key validators to read live settings instead of cached values
- Update database models with explicit

docs/10_plan/README.md

@@ -0,0 +1,31 @@
+# Planning Index (docs/10_plan)
+
+Quick index of planning documents for the current and upcoming milestones.
+
+## Weekly Plan (Current)
+- **00_nextMileston.md** — Week plan (2026-02-23 to 2026-03-01) with success metrics and risks
+- **99_currentissue.md** — Current issues, progress, and status tracker for this milestone
+
+## Detailed Task Breakdowns
+- **01_js_sdk_enhancement.md** — JS SDK receipt verification parity (Day 1-2)
+- **02_edge_gpu_implementation.md** — Consumer GPU optimization and edge features (Day 3-4)
+- **03_zk_circuits_foundation.md** — ML ZK circuits + FHE foundations (Day 5)
+- **04_integration_documentation.md** — API integration, E2E coverage, documentation updates (Day 6-7)
+
+## Operational Strategies
+- **05_testing_strategy.md** — Testing pyramid, coverage targets, CI/CD, risk-based testing
+- **06_deployment_strategy.md** — Blue-green/canary deployment, monitoring, rollback plan
+- **07_preflight_checklist.md** — Preflight checks before implementation (tools, env, baselines)
+
+## Reference / Future Initiatives
+- **Edge_Consumer_GPU_Focus.md** — Deep-dive plan for edge/consumer GPUs
+- **Full_zkML_FHE_Integration.md** — Plan for full zkML + FHE integration
+- **On-Chain_Model_Marketplace.md** — Model marketplace strategy
+- **Verifiable_AI_Agent_Orchestration.md** — Agent orchestration plan
+- **openclaw.md** — Additional planning notes
+
+## How to Use
+1. Start with **00_nextMileston.md** for the week scope.
+2. Jump to the detailed task file for the day’s work (01-04).
+3. Consult **05_testing_strategy.md** and **06_deployment_strategy.md** before merging/releasing.
+4. Use the reference plans for deeper context or future phases.