chore(memory): capitalize BDR-009 from caveman format mandate

Append BDR-009 entry + Index update in decisions.md, plus 2026-05-05
heading in journal.md covering the 4-commit batch.

Catches Index up to BDR-008 (was missing 007/008 entries despite
already-written sections).

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

.claude/memory/decisions.md

@@ -28,6 +28,9 @@ rules:
 | BDR-004 | 2026-04-27 | Adopt auto permission mode as default | accepted |
 | BDR-005 | 2026-04-27 | `motion` as default animation library; advisor stays read-only | accepted |
 | BDR-006 | 2026-05-03 | Caveman as 4th always-on plugin (output compression) | accepted |
+| BDR-007 | 2026-05-04 | Skill profiles partition gstack by usage (design / dev / qa / audit / minimal) | accepted |
+| BDR-008 | 2026-05-04 | Profile system v2: extend to plugins + MCPs + CLIs (web/seo/web-full/backend) | accepted |
+| BDR-009 | 2026-05-05 | Mandate caveman format on .claude/memory/ registries | accepted |
 
 ---
 
@@ -149,4 +152,22 @@ rules:
   - `current` heuristic now counts `installed` (CLI status) as available. Without that, profiles listing CLIs would never reach 100% match. Tiebreaker: when two profiles tie on %, larger total wins (web-full > web > design when all are 100%).
   - `cmd_show` widened TYPE column to 30 chars to fit `plugin@ui-ux-pro-max-skill` without breaking alignment.
   - `mcp magic` toggle delegates to `lib/toggle-external.sh enable magic` which requires `MAGIC_API_KEY` in `.env`. If key missing, profile.sh prints info line and continues — rest of profile still applies.
-- **Reference**: `lib/profile.sh` (`MANAGED_PLUGINS`/`PROTECTED_PLUGINS` arrays, `skill_status` plugin@/cli/mcp branches, `enable_skill`/`disable_skill` plugin@ + mcp branches, `cmd_set` plugin disable loop, `cmd_current` available-counting), `lib/profiles/{web,seo,web-full,backend}.profile`, refined `lib/profiles/{design,dev,qa,audit}.profile` (use `plugin@<marketplace>` syntax + `cli` entries), `skills/profile/SKILL.md` (updated profile table + mechanism table), `agents/plugin-advisor.md` (extended profile recommendation table).
+- **Reference**: `lib/profile.sh` (`MANAGED_PLUGINS`/`PROTECTED_PLUGINS` arrays, `skill_status` plugin@/cli/mcp branches, `enable_skill`/`disable_skill` plugin@ + mcp branches, `cmd_set` plugin disable loop, `cmd_current` available-counting), `lib/profiles/{web,seo,web-full,backend}.profile`, refined `lib/profiles/{design,dev,qa,audit}.profile` (use `plugin@<marketplace>` syntax + `cli` entries), `skills/profile/SKILL.md` (updated profile table + mechanism table), `agents/plugin-advisor.md` (extended profile recommendation table).
+
+## BDR-009 — Mandate caveman format on .claude/memory/ registries
+
+- **Date**: 2026-05-05
+- **Status**: accepted
+- **Decision**: all writes to `.claude/memory/*.md` (decisions, learnings, blockers, journal, evals) MUST use caveman style — drop articles (a/an/the), drop filler (just/really/basically/actually/simply), fragments OK, short synonyms (big not extensive, fix not "implement a solution for"). Keep technical terms exact, code blocks unchanged, error messages quoted exact, IDs (BDR-XXX, LRN-XXX, BLK-XXX, EVAL-XXX) and dates unchanged. Pattern: `[thing] [action] [reason]. [next step].` Rule added to `CLAUDE.md` "Memory registries" section. Applied retroactively to existing 5 registries via `/caveman:compress`. Pre-compression backups saved as `*.original.md` (gitignored).
+- **Why**: registries loaded every session start (per CLAUDE.md "Session start" step 1) — every token compressed cuts permanent input cost. Measured ~40% input-token reduction across 5 files (164→97 lines on average per registry). Caveman style preserves all technical substance (code, IDs, error strings, refs) while dropping prose padding that no engineer needs at re-read. Rule mirrors English-only rule that already governs registries — both about read-efficiency, not aesthetics.
+- **Alternatives rejected**:
+  - Compress only on new entries, leave existing prose untouched — rejected: every session-start still pays 40% prose tax on legacy entries (largest part of file). Mixed-style file harder to scan than uniform compressed file.
+  - Use lighter compression (drop only fillers, keep articles) — rejected: half-measure. Caveman lite saves ~15%, full saves ~40%. Cost identical (one /caveman:compress run).
+  - Move registries to JSON/YAML for max density — rejected: registries are narrative (BDR rationale, LRN context). YAML/JSON would lose nuance, force schema rigidity. Caveman keeps prose readable, just compressed.
+  - Skip rule, rely on writers to compress organically — rejected: untested writers (skills, future agents) revert to verbose prose. Explicit rule + caveman-mode-active hook ensures consistency without per-skill enforcement.
+- **Caveats**:
+  - Code blocks, error strings, commit refs, IDs, dates, file paths MUST stay byte-exact — caveman applies to prose only.
+  - User-facing CAPITALIZE prompts may stay verbose / mirror user language; rule applies only to written entry.
+  - `*.original.md` backups gitignored (BDR-009 commit `639486a`) — recoverable via git history of pre-compression commit.
+  - Existing registries entries compressed in commit `e4a9259`; new entries written caveman from start (BDR-009 itself is first such entry).
+- **Reference**: `CLAUDE.md` "Format — registries ALWAYS caveman" section, commits `520188a` (rule added), `e4a9259` (5 registries compressed), `639486a` (gitignore backups).

.claude/memory/journal.md

@@ -43,4 +43,11 @@ rules:
 - `cmd_current` honestly reports "full" when no `gstack__*` entry exists in `skills-disabled/` — avoids "100% match" trap when full gstack on.
 - Tested end-to-end: list/show/current/diff/set/reset/apply all green; shellcheck clean; symlink state restored after reset.
 - Profile system v2 (BDR-008): extended `profile.sh` to toggle Claude plugins (`claude plugin enable|disable`) + MCP servers (`magic` via `lib/toggle-external.sh`). Added 4 new profiles: `web`, `seo`, `web-full`, `backend`. Refined existing profiles to use `plugin@<marketplace>` syntax + `cli` entries. Always-on plugins protected by `MANAGED_PLUGINS` allowlist + `PROTECTED_PLUGINS` denylist.
-- Verified: `set web` enables ui-ux-pro-max + magic; `set seo` disables ui-ux-pro-max; `set minimal` disables ui-ux-pro-max but spares caveman/security-guidance/superpowers. `current` heuristic respects ties (web-full beats web at 100%).
+- Verified: `set web` enables ui-ux-pro-max + magic; `set seo` disables ui-ux-pro-max; `set minimal` disables ui-ux-pro-max but spares caveman/security-guidance/superpowers. `current` heuristic respects ties (web-full beats web at 100%).
+
+## 2026-05-05
+
+- Mandated caveman format on all `.claude/memory/*.md` writes (BDR-009). Rule added to CLAUDE.md "Memory registries" section. Self-applied: CLAUDE.md prose compressed in same pass.
+- Compressed 5 existing registries via `/caveman:compress` (decisions, learnings, blockers, journal, evals) — ~40% input-token reduction per session-start load.
+- Side chores: disabled `example-skills@anthropic-agent-skills` plugin in settings.json; gitignored `*.original.md` compress backups (recoverable via git history).
+- 4 atomic commits (`0275eed..639486a`) via `/commit-change`.