docs(M10): seed M11 milestone folder

Made-with: Cursor

docs/milestones/M11/M11_plan.md

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+# M11 — Runner Lifecycle Surface
+
+Phase: **Phase III — Runner & Service Boundary**
+Status: Planned
+
+---
+
+# 1. Intent / Target
+
+Introduce lifecycle structure on ProcessingRunner:
+
+```
+runner.prepare()
+runner.execute()
+runner.finalize()
+```
+
+This enables:
+* cancellation
+* instrumentation
+* progress reporting
+* distributed execution (later milestones)
+
+Behavior-preserving. No runtime changes yet.
+
+---
+
+# 2. Scope Boundaries
+
+### In scope
+
+* Add prepare / execute / finalize structure to ProcessingRunner
+* Route existing run() logic through execute()
+* Maintain identical behavior
+* Add minimal contract tests
+
+### Out of scope
+
+* No cancellation implementation yet
+* No async
+* No instrumentation hooks (M12)
+* No txt2img path through runner (M13)
+
+---
+
+# 3. Invariants
+
+| Surface | Invariant | Verification |
+|---------|-----------|--------------|
+| CLI behavior | Identical | smoke tests |
+| API responses | Unchanged | tests |
+| Processing results | Byte-identical | quality tests |
+| CI coverage | ≥ 40% | CI gate |
+
+---
+
+# 4. Deliverables
+
+Code: `modules/runtime/runner.py` (lifecycle methods)
+Tests: `test/quality/test_processing_runner.py` (lifecycle contract)
+Docs: M11_plan.md, M11_toolcalls.md, M11_run1.md, M11_summary.md, M11_audit.md
+Ledger: Update `docs/serena.md`
+Tag: `v0.0.11-m11`

docs/milestones/M11/M11_toolcalls.md

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+# M11 Toolcalls — Runner Lifecycle Surface
+
+Implementation toolcalls for Cursor execution.
+
+| Timestamp | Tool | Purpose | Files/Target | Status |
+|-----------|------|---------|--------------|--------|