fix(ingestion): dedupe Rust mod items per #[path] value

[Pushpak731]

Summary

• The raw-statement dedup key for a Rust mod_item is now qualified with its #[path] attribute value: mod imp; has the same raw text under two #[cfg] gates, but with different #[path] targets it is a feature-flag twin, not a duplicate. The file named by the second declaration previously lost its import edge and was then reported as unreachable with its exports unused (the ripgrep crates/core/index/mod.rs shape from the issue).
• True duplicates (same raw text and same path, or no path at all) still dedupe; use statements and all other languages are untouched. Implementation follows the issue's suggestion of a Rust-specific key, like the existing Pascal/Elixir/F# pre-dedup precedent.

Related Issues

Closes #2935

Test Plan

• Tests pass (pytest)
• Lint passes (ruff check .)

New tests/unit/ingestion/test_rust_mod_path_dedup.py (30 tests): parser-level dedup semantics (the ripgrep and platform-twin shapes, same-path and no-path dedup guards, attribute order, doc comments, visibility modifiers, three-way gates, subdirectory paths, nearest-of-two path attributes, mixed use/mod) and end-to-end graph/dead-code assertions (both twin files get importer edges, neither is flagged unreachable/unused-export, no double edges for real duplicates, plain mod default-layout resolution unchanged). Full tests/unit/ingestion/: 4125 passed, 5 skipped, 2 xfailed; ruff check clean.

Checklist

• My code follows the project's code style
• I have added tests for new functionality
• All existing tests still pass
• I have updated documentation if needed

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[repowise-bot]

🔍 1 thing to check

1. 4 files that usually change with this PR's files are not in it: packages/core/src/repowise/core/ingestion/models.py, packages/core/src/repowise/core/analysis/dead_code/analyzer.py, packages/core/src/repowise/core/ingestion/call_resolver.py (+1 more)

✅ Health of changed files: 2.3 → 3.9 (+1.6)

👀 Suggested reviewers @RaghavChamadiya

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Repowise checks

Check	Result
Coverage	Waiting for this PR's CI to upload a report (last report from this repo 27 minutes ago)
Tests	1 of 2 changed files reached by a test (inferred) · 1 reached by no test
Security	No new findings on changed lines
Doc drift	No drift in docs this PR edits · 1 document name changed files

Tests: which tests reach the changed files (inferred)

• packages/core/src/repowise/core/analysis/health/perf/dialects/go.py: No test reaches this file (inferred)
• packages/core/src/repowise/core/ingestion/parser.py: tests/unit/ingestion/parser/test_query_compilation.py, tests/unit/ingestion/parser/test_vbnet.py and 244 more (call graph)

Inferred from the code graph of the last indexed commit (a684707), nearest tests first; a test reaching a file does not mean it covers the changed lines.

Doc drift

• docs/reference/COMPUTED_GLOSSARY.md names packages/core/src/repowise/core/ingestion/parser.py and is not in this PR

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[RaghavChamadiya]

Thanks @Pushpak731, qualifying the dedup key with the #[path] value is the right shape for #2935, and the ripgrep twin-module case plus the same-path guard in your tests cover it well.

One thing before I can merge: this branch carries a second commit, the Go defer_in_loop change that is also open as #2942. Squash-merging would land both changes under this PR. Could you rebase so only the fix(ingestion): dedupe Rust mod items per #[path] value commit remains (git rebase -i origin/main, drop the Go commit, git push --force-with-lease)? Nothing else needs to change. Ping me once it is pushed and I will merge.