## What
Operator-authorized (Bo, 2026-06-02). Strips the remaining **Gas City**
(`gastown`) coupling from AgentOps and reconciles the **split-doctrine
state** on `main` that the #672–#676 post-mortem flagged: canonical docs
(#676) said NTM+MCP+managed-agents while user-facing docs still
described Gas City as the reference substrate.
The out-of-session substrate is now uniformly **NTM** (local tmux swarm)
+ **MCP** (`ao mcp serve`, shipped) + **managed-agents** (`ao agent`).
AgentOps adopts a substrate; it owns none. Closes **ag-124p** (and
resolves **ag-h93p** — the claude.json gc-hook decouple).
## Deleted (load-bearing surfaces, per the bead's verified scope)
- `packs/agentops/` (the reference City) + root `city.toml`
- `skills/using-gc` + `skills-codex/using-gc` (+
`tests/scripts/using-gc-skill.bats`)
- `gc prime/nudge/mail/hook` wiring in `cli/hooks/claude.json` → now
hookless, matching 3.0 doctrine
## Doc sweep (the split-doctrine fix the post-mortem required)
- **README.md, docs/MIGRATION-3.0.md, docs/dependencies.md,
docs/activation-profiles.md** re-narrated to the substrate trio (the
four files the verdict named)
- AGENTS.md / CLAUDE.md substrate bullets; `dream` skill (+codex twin)
retirement pointer; `shared` / `agent-native` / `using-agentops`
cross-refs; skill-dispositions, context-map, sku-catalog, google-sre
convergence map
## Regenerated derived surfaces
Skill counts (81→80), `registry.json`, `skills/catalog.json`,
context-map, skill-domain-map, codex hashes (14) + manifest, SKILL-TIERS
— all via the generators, validated drift-free.
## Scope boundaries / follow-ups
- **`cli/internal/doctor/fix_bridges.go`** still carries a gc-bridge
detector/fixer subsystem. Out of the bead's verified scope; degrades
gracefully (stat-checks, returns empty when `gc`/`city.toml` absent);
removing it is a test-backed Go change → **follow-up bead**.
- **CLAUDE.md "Gas City bridge — REMOVED"** note kept intentionally:
it's an anti-re-coupling record, not substrate-framing.
- The local-only **bd-closeout** pre-push check (not in CI) is a
pre-existing gap on `main` (its AGENTS.md has no `bd dolt push` line) —
untouched here.
- `thesis-stability` gate FAIL, if present, is the pre-existing
README/PRODUCT/GOALS tagline drift, unrelated to this PR (my
README/PRODUCT edits are the dependency table + skill-count numbers, not
the tagline).
## Verification
`go build ./...` + `go vet` green · skill schema (80/80) + integrity
(heal --strict clean) + lint suite (0 fail) + codex parity green ·
sku-catalog & context-map drift gates green · zero broken markdown links
to deleted paths.
Closes-scenario: ag-124p#gc-coupling-strip
Bounded-context: BC5-Runtime
Evidence: docs/MIGRATION-3.0.md
#275's billboard refactor thinned process-skill SKILL.md files and moved
detail into references/, but the validate contracts still grepped SKILL.md.
skill-lint + smoke-test: relax content-presence checks in crank/implement/
post-mortem/swarm validate.sh to scan the skill as a unit (SKILL.md +
references/); structural/identity checks stay SKILL.md-only. test-first-smoke
updated to match relocated SPEC/TEST WAVE + Step 0/4 headings.
skill-lint line caps: trim flywheel 310 -> 286 (cap 300), using-agentops
261 -> 239 (cap 250) by removing redundant prose, no content lost.
skill-integrity: link 3 orphaned references (crank/branch-isolation,
validation/flags + release-readiness-gates).
codex parity: regenerate stale skills-codex source hashes (77 skills).
Local: run-all.sh PASS, heal.sh --strict clean, smoke-test PASS.
Adds a 2400-char aggregate budget for skills-codex/*/SKILL.md `description:`
fields in tests/skills/test-token-budgets.sh, then trims each skill's description
to fit (catalog now 2146/2400). Both Claude and Codex SKILL.md descriptions
are kept in sync; codex .agentops-generated.json hashes regenerated.
Adds --repair-shape to scripts/audit-codex-hooks.sh: when ~/.codex/hooks.json
is missing or in legacy-flat shape, rewrites it from hooks/codex-hooks.json
with the active plugin_root (read from .agentops-codex-install.json) and
backs up any prior file. Covered by new test_repairs_legacy_flat_shape.
Memory decay (4 .agents/ files) bumped by the SessionStart inject hook.
Reference .md files in skills-codex/ were copied verbatim from source,
bypassing all converter rewrite rules. Now .md files in references/,
scripts/, and other subdirs are processed through codex_rewrite_text()
during passthrough copy.
Empirically validated: Codex agent confirms 0 Claude primitives in
converted reference files (was 107). Remaining gap: crank/swarm
orchestration patterns need full Codex-native rewrites (not converter
fixes) — tracked separately.
Validated with: codex exec -s read-only (gpt-5.4)
Generated by sync-codex-native-skills.sh with modular layout.
References and scripts copied as files instead of inlined.
Overrides applied for 9 skills. Parity validated: 49/49.
- skills-codex/: 53 skills converted to Codex-native agents.md format
- install-codex-native-skills.sh: install to ~/.codex/agents/
- sync-codex-native-skills.sh: sync from source skills/ to skills-codex/
- test-codex-native-install.sh: integration tests for the install pipeline
Bo