[CLAUDE] Docs: H-15 v3 memory-budget full-parity (lead 220K/sub 60K/wf 50K) + spawn-fill-to-budget

anh owner-directive: full AI_INFRA parity, supersede S82 self-shrink (AI under-shrinking forbidden by mark RC-...01-58-01). New spawn_fill_directive: fill sub context to budget via RICH spawn prompt (MEMORY.md byte-cap = 1 slice only, prompt fills rest). engine +G.5 + adopt-delta S83, ACTIVE-MARKS H-15 v3-delta RC-pqhuy1987-22-06-2026-16-35-37, agents/README retire <=8K-brief. Detector 26 baseline (0 new), A7 217/217.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.claude/agents/README.md

@@ -62,7 +62,7 @@
 **Em main solo CHỈ khi:** schema/UX/architecture decision · cross-stack tight coupling · bug fix reasoning chain · gotcha #53 fallback (spawn truncate/529 → em main solo reliable, proven S37 BE 700 LOC + FE 4 file).
 
 **Anti-truncation rules (gotcha #53 — 5× occurrence S35-S37):**
-- Brief WRITE agent ≤ 8K (heavy spec ~10K → truncate risk). FE tight brief proven 0 truncation S36.
+- **Spawn prompt = RICH, fill-to-budget (H15-v3 S83 — supersedes old "≤8K brief"):** nạp INPUT tới token-budget của sub (mem-sub **60K** / wf-sub **50K** per `memory-budget.json:spawn_fill_directive`) bằng context GIÁ-TRỊ cao (relevant gotchas + state + full task-context + docs/memory liên-quan) — KHÔNG padding. Truncation #53 = rủi-ro RETURN của agent (vá bằng lean `memoryDelta` return + em-main recover-disk), **KHÔNG** vá bằng starve INPUT. *(Heuristic "≤8K brief" cũ = guard thời context-nhỏ S36, nay nghỉ.)*
 - Tiered Memory v1: L1 HOT soft-cap ~30KB + L2 archive on-demand + L3 RAG just-in-time (per AI_INFRA policy). Investigator 32KB S37 truncate = lesson; soft-cap ~30KB tránh tái diễn.
 - Agent keep entry ≤ 1.5K chars (frontmatter rule mỗi agent).
 - Em main grep verify manual nếu agent return truncated mid-task.