[sunerpy]

Summary

• preflight every tree-sitter AST with a deterministic 256-level logical named-node limit before recursive semantic extraction
• fail closed per file: discard partial nodes, edges, and unresolved references while continuing the rest of the project
• make incremental sync remove stale graph data and converge byte-for-byte with a fresh forced rebuild
• document the safety boundary in the canonical Skill and English/Chinese architecture docs

Upstream provenance

• ports the deep-AST crash class fixed upstream for v1.6.0 at 838006c947ebe69407e8f64ba756f97132f411f4
• intentionally uses a deterministic iterative preflight instead of upstream's platform stack-pointer / wasm fallback
• extraction version remains 11; existing golden artifacts are unchanged

Verification

• make ci
• pre-push gate (fmt, clippy, workspace tests, guardrail)
• 30,000-level C/C++/Rust/TypeScript/Python fixtures on a 1 MiB thread stack
• exact 256/257 logical-depth boundary
• incremental sync stale-node removal and canonical equality with index --force

[codecov]

Codecov Report

❌ Patch coverage is 89.87342% with 8 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
crates/codegraph-extract/src/walker.rs	89.87%	8 Missing ⚠️

❌ Your patch check has failed because the patch coverage (89.87%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

@@            Coverage Diff             @@
##             main     #249      +/-   ##
==========================================
- Coverage   95.37%   95.36%   -0.01%     
==========================================
  Files         142      142              
  Lines       80050    80129      +79     
==========================================
+ Hits        76346    76416      +70     
- Misses       3704     3713       +9     

Files with missing lines	Coverage Δ
crates/codegraph-extract/src/walker.rs	93.23% <89.87%> (-0.05%)	⬇️

... and 1 file with indirect coverage changes

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