The axios 401 interceptor calls clearAuthClientState() on every 401, which
dispatched "auth-changed"; the App handler re-fetched /auth/me, which 401'd
again → interceptor → clearAuthClientState() → "auth-changed" → ... an unbounded
request storm (observed live: 100+ GET /auth/me and climbing) that ran whenever
the user was logged out (login page, expired session) — burning CPU, network and
battery and flooding the server.
Fix: make clearAuthClientState idempotent — only emit "auth-changed" when it
actually removes a stored user key (a real signed-in→out transition), so
repeated 401s can no longer re-trigger the fetch.
Runtime-verified in a live stack: /auth/me went from 100+ & growing to 0 &
stable. login-page/settings tests green. Documented in
docs/performance/PERFORMANCE_IMPROVEMENTS.md (Phase 3.5 runtime finding).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Evidence-based investigation across every leak vector (timers, listeners, object
URLs, observers, websockets, static server collections, IMemoryCache, Python
caches). Verdict: no confirmed memory leak — the codebase has disciplined
cleanup. One resource-release correctness bug (over-eager blob-URL revocation in
the CV carousel) was found and fixed (eed9b1f).
Adds docs/performance/: MEMORY_LEAK_REPORT.md, ROOT_CAUSE_ANALYSIS.md,
PERFORMANCE_IMPROVEMENTS.md.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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