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holocron/docs/spec/architecture.md
Defame1297 013b913bd4 docs: correct claims the apm conversion left false 
Documentation asserted things the code no longer did, which is how several of this
round's defects survived three review passes.

- `docs/spec/architecture.md` still described the pre-APM model — "each plugin has a
  `plugin.json` manifest" — when no such file exists. AGENTS.md routes agents here
  for the current structure, so it was live drift, not archive. Also cited ADR-0012
  where ADR-0003 is meant.
- AGENTS.md never said `.apm/` is the sole hand-edited source, while the generated
  mirror is byte-identical with no marker — an agent reading only AGENTS.md would
  edit the mirror and find out at pre-push. It also omitted that `apm` and `jq` are
  now required to push, unlike the `vale` bullet that exists for exactly that reason,
  and understated the pre-push gate. `apm marketplace check` hard-fails offline and
  `--offline` does not help, so the `SKIP=` escape hatch is documented rather than
  new machinery built.
- ADR-0017 carried hardcoded line numbers that drifted twice within one PR, and said
  `mcpServers` reinjection was real-syncs-only where the script's own header says
  both modes. Line numbers dropped rather than corrected.
- ADR-0015 asserted issue #90 was closed. It is open. Reworded to defer to the
  issue's own state rather than depend on someone remembering to close it.
- ADR-0014 said both audit skills pass `--config`; both SKILL.md files say pass none,
  and passing one fails with E100. The ADR was wrong.
- ADR-0007 cross-referenced an archived ADR-0011 whose number was later reused.
  Disambiguated with a note — renumbering a published ADR rewrites an immutable
  record and breaks every existing citation.
- CONTEXT.md claimed `lint-runner` is report-only via a missing `Edit` tool.
  Plugin-scope APM agents cannot express `tools:` (ADR-0016), so it is report-only by
  instruction now; ADR-0016 accepted that regression but CONTEXT.md was not updated.
- Recorded two undocumented consequences of the conversion: `displayName` dropped
  from all six compiled manifests and `owner.email` from the marketplace, and
  `mattpocock-skills` silently version-pinned and manually maintained.
- Wrote the version-bump policy issue #90 specified but never delivered. Its previous
  carrier, `marketplace-author`, was deleted in this PR, leaving the per-package rule
  documented nowhere.
- README fixes: kyberforge listed skills belonging to the `git` plugin and a deleted
  hooks path, `bin` advertised an agents directory it never had, and the docs index
  listed files that do not exist.

Refs: #90

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01X7GvKuJfy2WrdBmUttV4DT
2026-08-14 01:53:26 +00:00

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# Architecture
## Layered model
```
this repo (global defaults)
└── scripts/install.sh → ~/.claude/ (Claude Code config + content)
project repo (local overrides)
└── .claude/settings.json, CLAUDE.md (overrides global)
```
## Content deployment model
`scripts/install.sh` is a **deployer**, not a composer. It sources `scripts/deploy-manifest.sh` and deploys three categories:
- **Files** (`DEPLOY_FILES`): `providers/claude-code/CLAUDE.md` → `~/.claude/CLAUDE.md`; `providers/claude-code/settings.json` → `~/.claude/settings.json`; `core/AGENTS.md` → `~/.agents/AGENTS.md`
- **Executables** (`DEPLOY_EXECUTABLES`): `providers/claude-code/statusline-command.sh` → `~/.claude/statusline-command.sh` (with `+x`)
- **Directories** (`DEPLOY_DIRS`): `core/` → `~/.claude/core/` (destination fully replaced on each deploy)
Skills are **not** deployed by `install.sh`. They are distributed as plugins and installed separately via `claude plugin install <name>@holocron`.
`~/.claude/CLAUDE.md` is a thin adapter, not a content source. It imports `~/.agents/AGENTS.md` (always-on rules) and `governance.md` (always-on governance), then lists the content index. All always-on content lives in `AGENTS.md` files so other providers can import the same source without duplication.
## Plugin model
Skills, agents, MCP servers, and hooks are distributed as self-contained plugin units under `plugins/`, installed independently via `claude plugin install <name>@holocron`. Each plugin is an **apm package**: `plugins/<name>/apm.yml` plus a hand-authored `plugins/<name>/.apm/{skills,agents,hooks,commands,instructions,extensions}/` tree (ADR-0015). There is no hand-maintained `plugin.json` — every manifest and every host-visible content directory is compiled from that source.
Two compilers produce the plugin roots you see in the tree:
- **`apm pack` compiles the manifests** (ADR-0015). Per plugin: `.claude-plugin/plugin.json` and `.github/plugin/plugin.json`, both generated from `plugins/<name>/apm.yml`. Repo-wide, from the root `apm.yml`'s `marketplace:` block: `.claude-plugin/marketplace.json` (apm's `claude` output profile) and `.agents/plugins/marketplace.json` (its `codex` profile, a differently-shaped file). Those two are the only marketplace outputs apm has profiles for — the third root manifest, `.github/plugin/marketplace.json` (Copilot CLI's legacy path), is a byte-identical mirror of the Claude one maintained by `scripts/sync-marketplace-mirror.sh` and gated by the `check-marketplace-mirror-sync` pre-push hook.
- **`scripts/sync-plugin-content.sh` compiles the content mirror** (ADR-0017). It wraps `apm pack --format plugin` and copies the resulting bundle's flat `agents/`, `skills/`, `commands/`, `instructions/`, `extensions/`, and merged `hooks/hooks.json` back to the plugin root. Claude Code's installer convention-scans those flat paths and has no `.apm/` awareness whatsoever, so the mirror exists solely to satisfy the host's discovery contract.
`.apm/` is the sole hand-edited authoring source for plugin content. An edit made in the flat mirror is discarded by the next sync and is reported as drift by the `check-plugin-content-sync` pre-push hook. Hand-authored material that is not an `.apm/` primitive — `README.md`, `docs/`, `bin/`, `sources.md`, and `.mcp.json` — lives at the plugin root and is untouched by either compiler.
## Governance layer
`core/instructions/governance.md` is the always-on governance instruction file. Unlike the on-demand instruction files in the content index, governance.md is loaded into every Claude session via `@import` in `providers/claude-code/CLAUDE.md`. This is a technical guarantee, not a behavioural instruction — `@import` causes Claude Code to expand and load the file at launch, before any interaction begins.
The governance layer has two phases:
- **Phase 1** (complete): instruction and documentation layer — `governance.md` loaded via `@import`; `docs/ai-constitution.md` and `docs/wiki/HUMANS.md` as human-facing reference; `CONTEXT.md` extended with governance domain language.
- **Phase 2** (planned): deterministic enforcement layer — pre-commit hooks, CI gates, secret scanning, licence scanning. Specified in `docs/research/governance_principles/CONTROLS.md`.
## AGENTS.md pattern
This repo uses two `AGENTS.md` files as the provider-agnostic source of always-on rules (ADR-0003):
- **Repo-level `AGENTS.md`** — instructions for agents working inside this repo (structure, key rules). Imported by repo `CLAUDE.md` via `@AGENTS.md`.
- **Global `core/AGENTS.md`** — Communication and Behavior rules that apply across all projects. Deployed to `~/.agents/AGENTS.md`; imported by `~/.claude/CLAUDE.md` via `@~/.agents/AGENTS.md`.
Both `CLAUDE.md` files are thin adapters: they import from their respective `AGENTS.md` and add only Claude Code-specific syntax (`@import`, content index paths). They carry no original always-on content.
This repo also has a `CLAUDE.md` at its root — the Claude Code entry point for working in this repo. It imports `AGENTS.md` and `CONTEXT.md`, nothing more. This is distinct from `providers/claude-code/CLAUDE.md`, which is the global config deployed to `~/.claude/`.
## Provider model
`core/` is never tool-specific. `providers/` is never shared. When adding a new provider, write an adapter in `providers/<name>/` that translates core content into the tool's expected format and location. The core content itself does not change.
## Architectural decisions
Key hard-to-reverse decisions are recorded as ADRs in `docs/adr/`. See the index there for rationale on choices like the pull distribution model, copy-not-symlink coupling, and the two-tier CLAUDE.md structure.
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