PCP fork improvements: index-time importance ranking, token-budgeted repo-map tool, memory-ceiling backpressure, MCP param hardening, and pre-existing test-suite fixes#776

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Commits on Jul 2, 2026

red tests for diagnose-codebase-memory
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implement per-file cap constant + enforcing RSS memory ceiling
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fix: CBM_PERCENT pin by count not exact line number
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fix: cbm_mem_rss() undercounts on Linux, blinding the ceiling/backpressure
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red tests for codebase-memory-search (missing-param vs not-found + project_id alias)

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distinguish missing project param from unknown project; accept project_id alias

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fix: pre-existing test-suite defects — heap-UAF teardown, LSan leaks, unguarded div, env-poison, regex leak

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audit fixes (cycle 1): free path_regex on remaining search_code error paths

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red tests for codebase-memory-repomap-observability

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feat: repo_map seeds_unresolved[] + index_status indexed_at

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