docs: add canonical glossary + install mattpocock skills adapted for repo

docs/glossary.md is the shared vocabulary source for humans and agents.
Resolves every cross-cutting term used in this repo (feature, use case,
manifest, slice, conformance, dispatch, ...) with one-sentence definitions,
relationships, and flagged ambiguities. Linked from CLAUDE.md "Read First"
and AGENTS.md preamble so every session loads it early.

.claude/skills/ installs four mattpocock skills adapted to this monorepo:
  - to-prd: writes to docs/work/prds/ with the repo's PRD frontmatter +
    merged user-stories/implementation/testing sections
  - grill-with-docs: points at docs/decisions/ + docs/glossary.md; adds
    feature.manifest.ts + conformance-rule cross-checks
  - grill-me: minor — adds pnpm work / fallow / manifest shortcuts
  - handoff: adds the repo's specific don't-duplicate artifacts list

Also fixes a missed "Phase-1" residual in CLAUDE.md's Read First section.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.claude/skills/grill-with-docs/glossary-format.md

@@ -0,0 +1,62 @@
+# docs/glossary.md Format
+
+## Structure
+
+```md
+# Glossary
+
+Domain vocabulary for `template-vertical`. Terms specific to this repo — clean architecture, vertical features, agent workflow, conformance. General programming concepts don't belong here; implementation details belong in code or ADRs.
+
+## Architecture
+
+**Feature**:
+A vertical slice owning its Clean Architecture layers (entities → application → infrastructure → DI → integrations).
+_Avoid_: module, domain, app.
+
+**Use case**:
+A single business action exposed by a feature, implemented as a factory `(deps) => async (input) => output`. Each one has a manifest entry, a Zod input/output schema pair, a colocated test, and a controller.
+_Avoid_: command, action, handler.
+
+**Manifest**:
+The `feature.manifest.ts` file that declares a feature's use cases, audits, publishes, consumes, and required core packages. Source of truth for conformance gates.
+
+**Conformance**:
+The 5-gate enforcement system (TS brands → ESLint → boot assertion → `pnpm conformance` → fallow) that keeps manifest and code aligned.
+
+## Workflow
+
+**PRD**:
+The top-level requirements doc at `docs/work/prds/<date>-<slug>.prd.md` that seeds an epic.
+
+**Epic**:
+A large body of work containing stories. Folder at `docs/work/<epic-slug>/_epic.md`.
+
+**Story**:
+One use case or technical capability. Folder under the epic, file `_story.md`.
+
+**Task**:
+One vertical slice = one PR = one commit. File `<slug>.task.md` under the story folder.
+
+## Relationships
+
+- A **PRD** decomposes into one or more **Epics**
+- An **Epic** contains one or more **Stories**
+- A **Story** is implemented by one or more **Tasks**
+- A **Use case** is declared in a **Manifest** before it has code
+- **Conformance** asserts that the **Manifest** and the code agree
+
+## Flagged ambiguities
+
+- (none yet — append here when conflicts are resolved during grilling)
+```
+
+## Rules
+
+- **Be opinionated.** When multiple words exist for the same concept, pick the best one and list the others as aliases to avoid.
+- **Flag conflicts explicitly.** When grilling surfaces ambiguity, capture both meanings under "Flagged ambiguities" with the resolution.
+- **Keep definitions tight.** One sentence max. Define what it IS, not what it does.
+- **Show relationships.** Use bold term names; express cardinality where obvious.
+- **Only domain terms specific to this repo.** General programming concepts (timeouts, retries, errors, DI) don't belong even if used heavily. Before adding, ask: is this concept unique to template-vertical, or generic?
+- **Group under subheadings** when natural clusters emerge (Architecture, Workflow, Instrumentation, etc.).
+
+This repo is **single-context**: one `docs/glossary.md`, no `CONTEXT-MAP.md`. Don't switch to multi-context layout unless the repo splits.