feat: update AI automation agents, add reviewer agent, fix leaks, enhance CI

Agents:
- cmake-expert: fix stale CMake version (4.1 -> 3.22), add OpenSSL/xxHash deps
- integrator: fix stale test.py references to tests/integration/, update CI docs
- test-writer: update integration test patterns for modular test structure
- reviewer: new comprehensive PR reviewer (code, build, CI, docs, quality)

Bug fixes:
- delta.c: set instructions[i].type = DELTA_INSTR_LITERAL in deserialize
- scanner.c: free ArrayList when directory_scanner_next returns NULL

CI:
- Add sanitizer job (ASan + UBSan) with LSAN suppressions for pre-existing leaks
- Add clang-tidy job with proper warning/error detection
- Remove || true masking (fixes now make sanitizer useful)

Cleanup:
- gitignore build-asan/
- .lsan-suppressions.txt for known CLI config leaks

.gitea/workflows/ci.yaml

@@ -42,7 +42,7 @@ jobs:
         run: ./build/tests
 
       - name: Integration Tests
-        run: python3 -m pytest tests/ -v --tb=short
+        run: LSAN_OPTIONS=suppressions=.lsan-suppressions.txt python3 -m pytest tests/ -v --tb=short
 
   clang-tidy:
     runs-on: ubuntu-latest

.gitignore

@@ -2,3 +2,4 @@ build
 data_copied
 test_data/
 __pycache__/
+build-asan/

.lsan-suppressions.txt

@@ -0,0 +1,6 @@
+# LSAN suppressions for FastSync
+# Pre-existing leaks — not introduced by this PR.
+# Remove these as each leak is fixed.
+
+# Config object never freed at CLI exit (main allocates, OS reclaims)
+leak:config_create