Add ARCHITECTURE.md Section 4 covering the jitter buffer's adaptive
playout delay: controller state/params, the grow/shrink/silence/overflow/
prime-timeout transitions, and a state diagram; note it in the Section 2
module map. Sections renumbered 4-7 -> 5-8 (no internal cross-refs).
Gemini-authored (junior) via the headless agy loop. Senior review caught +
fixed an inaccuracy: the original called the strategy "AIMD (multiplicative
decrease)" but the shrink is additive (-1, rate-limited by CLEAN_RUN_TO_SHRINK),
not multiplicative; reworded accordingly. Numbers fact-checked against
src/core/jitter.rs.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
molluskandClaude Opus 4.8
1bf79be0e1