chore(memory): case 7 registries, contracts, CHANGELOG — BDR-104 LRN-174 EVAL-033

.claude/memory/decisions.md

@@ -125,6 +125,7 @@ rules:
 | BDR-101 | 2026-09-25 | `full` = default profile: no selection ⇒ full in force, `reset` applies it, install applies it | accepted |
 | BDR-102 | 2026-09-27 | agent-skills: no plugin, vendor 3 skills + build floor-guard + routing census + rest-api rule | accepted |
 | BDR-103 | 2026-09-27 | 6-repo review: 5 verdicts, 3 criteria (grep-verified coverage, per-session cost, doctrine conflict); stars decided nothing | accepted |
+| BDR-104 | 2026-09-28 | MengTo motion pack: vendor 5 scroll skills pinned via shared lib/vendor-skills.sh + build personal skill site-motion; 17 skipped | accepted |
 
 ---
 
@@ -1297,3 +1298,12 @@ Branch feature/user-writing-web-rules, UNMERGED (human gate).
 - **Alternatives rejected**: install-then-prune (sunk cost, [[BDR-047]] ECC lesson); one bulk verdict (user wanted one case per turn, each with a build-vs-install call); building reticle's engine (1 286 server files).
 - **Caveats**: borrowed prompts change upstream with no diff, the pin is the review point; do not re-audit these six expecting more; mengto motion pack from the ui-skills registry is the open follow-up if site-level choreography (GSAP/ScrollTrigger, WebGL hero, masked reveals) proves thin locally.
 - **Reference**: branches feature/yagni-ladder (9315c6c, de7371d), feature/agent-skills-borrow (d28c45e 2b25cb4 409db51 1a8e6de 7401383 6617889 d71f3a7), feature/web-building-microrules (a2e654d 5a27372), chore/six-repo-review-notes (da35cde 197225a). Links [[BDR-102]] [[LRN-172]] [[LRN-173]] [[EVAL-032]] [[BDR-047]] [[BDR-006]].
+
+## BDR-104 — MengTo motion pack: vendor 5 scroll skills via a shared helper + build `site-motion`; 17 skipped
+- **Date**: 2026-09-28
+- **Status**: accepted, feature/mengto-site-motion, UNMERGED (human gate)
+- **Decision**: (1) `lib/vendor-skills.sh` = one `vendor_pinned_skills <lock-key> [refresh]` for every curl-vendored upstream (agent-skills moved onto it; lock `skills` as list or dict of file lists; python argv lock read; `..`/charset guard; `VENDOR_BASE_URL` only as `file://`; tmp+mv; refresh skips never-installed skills, update-all convention). (2) Vendored at a965851: scroll-world-storytelling, build-threejs-scroll-worlds (+5 refs incl. scroll-conductor.js), scroll-scrubbed-visual-sequence, scroll-scrubbed-word-reveal, scroll-progress-timeline; text only, never demo/agents/binaries; design/web/web-full/full profiles. (3) `skills/site-motion` personal: invariants of the other 17 (gates, engine choice, Lenis sync, Astro ClientRouter lifecycle, numbered recipes, pitfalls); routed in CLAUDE.global.md Build UI chain + design-gate (not GATE-BLOCK).
+- **Why**: user asked whether the UI profiles carry motion knowledge for lively sites. Census: component polish deep (emil 27 KB, motion cookbook, impeccable animate), site choreography thin as workflows; ui-ux-pro-max CSVs cover terms but as search rows ([[LRN-174]]). Two analyzers read 22 skills: 5 clean workflows/recipes absent locally; 17 covered, generic, buggy (reduced-motion `clearProps`, gate before `registerPlugin`, no-JS opacity 0, refresh-rate `phi`) or Codex/Xcode machinery → distil per [[LRN-141]]. Registry sample (11) ≠ catalog (88): always list the tree.
+- **Alternatives rejected**: vendor all 22 (bugs + duplicates + 17×~100 tok descriptions); distil only (loses the two deep workflows whose value is their full text); second inline curl loop (duplication; helper instead); `VENDOR_BASE_URL` gated by a companion var (file:// prefix check suffices); grouped toggle pack (per-name like emil).
+- **Caveats**: vendored prompts change upstream with no diff, pin = review point; GSAP-first content vs [[BDR-005]] `motion` default, site-motion states the allowance; LOW hardening open: `re.match` `$` accepts a trailing newline, `source`/`path`/`sha` lock fields not charset-checked; `make link` + `bash lib/profile.sh apply full` after merge (user); sub-agent leftovers `/tmp/mengto-verify` (user removes).
+- **Reference**: commits 2a1ad17 (helper + vendoring), ba14b5e (site-motion); contracts `.claude/tasks/contracts/2026-09-27-{mengto-vendor,site-motion-skill}-0002.md`; gates MET, verifiers CONFORME after 3 re-dispatches (frontmatter shape, refresh convention, security env override + traversal), security PASS ×2, `make test` 36 suites green minus 2 pre-existing T16a. Links [[BDR-103]] [[BDR-102]] [[LRN-141]] [[LRN-174]] [[EVAL-033]].