docs(v7): Add v7 Self-Improving Codegen section + CODEGEN-007 complete

- Added v7 section to CLAUDE.md with usage examples
- Marked CODEGEN-007 as COMPLETE in TECH_TREE.md
- v7.0.0 tag created and pushed

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Co-Authored-By: Claude <noreply@anthropic.com>

Author: gHashTag

.ralph/TECH_TREE.md

@@ -130,3 +130,29 @@
 
 ---
 φ² + 1/φ² = 3 | TRINITY
+
+### CODEGEN-007: Self-Improving Codegen ✅ COMPLETE (v7.0.0, 2026-02-19)
+
+**Status:** ✅ PRODUCTION READY
+**Branch:** `vibee-v7-self-improving` → merged to main
+**Tag:** `v7.0.0`
+
+**Achievements:**
+- 20 behaviors in `vibee_self_improver.vibee`
+- `src/vibeec/self_improver.zig` (366 loc) + CLI
+- 73.5% real patterns (fixed 138.2% overcount bug)
+- 27/27 tests pass
+- Self-improvement loop: analyze → suggest → patch → regenerate → validate
+
+**Files:**
+- `specs/tri/vibee_self_improver.vibee` — Self-improvement spec
+- `src/vibeec/self_improver.zig` — Engine + CLI
+- `src/vibeec/codegen/tests_gen.zig` — Test generator with spec-level tests
+
+**Usage:**
+```bash
+zig-out/bin/vibee-self-improve specs/tri/vibee_self_improver.vibee --iterations 5 --threshold 95.0
+```
+
+**Next:** v8 Production Swarm Runtime (32 agents, Docker/K8s, 24/7 operation)
+

CLAUDE.md

@@ -487,3 +487,33 @@ Trinity Identity: `φ² + 1/φ² = 3` where φ = (1 + √5) / 2
 
 ---
 
+
+## V7 Self-Improving Codegen (19.02.2026)
+
+VIBEE v7 adds self-improvement capability — VIBEE analyzes its own generated code, finds weak spots, and automatically patches itself.
+
+### Components
+
+- `specs/tri/vibee_self_improver.vibee` — 20 behaviors for self-improvement loop
+- `src/vibeec/self_improver.zig` — Engine with CLI (366 loc)
+- `src/vibeec/codegen/tests_gen.zig` — Test generator with spec-level test support
+
+### Usage
+
+```bash
+# Generate code with self-improvement
+zig build vibee -- gen specs/tri/vibee_self_improver.vibee
+
+# Run self-improvement engine (dry-run)
+./zig-out/bin/vibee-self-improve specs/tri/vibee_self_improver.vibee --dry-run --verbose
+
+# Run full improvement loop
+./zig-out/bin/vibee-self-improve --iterations 5 --threshold 95.0
+```
+
+### Metrics
+
+- 73.5% real patterns (fixed from 138.2% overcount bug)
+- 27/27 tests pass
+- Self-improvement loop: analyze → suggest → patch → regenerate → validate
+