Ship native subagent definitions for GitHub Copilot and Cursor

The github and cursor providers previously received only the generated
degraded/ inline fallbacks. Both harnesses support real custom subagents,
so the build now emits them from the same skill/agents/ source:

- GitHub Copilot: .github/agents/impeccable-<role>.agent.md with portable
  frontmatter only (name + description; omitting tools grants all tools,
  and Copilot has no documented model/effort/max-turns equivalents).
- Cursor: .cursor/agents/impeccable-<role>.md with name, description,
  model: inherit, is_background: false, and readonly derived from the
  agent's tool list (true only for the finish reviewer, which declares
  neither Write nor Edit). effort/max-turns are skipped because Cursor's
  effort option requires an explicit model id.

Agent bodies now also resolve {{scripts_path}} and strip rule markers in
the shared agentFormat pipeline, which fixes the previously unresolved
placeholder in the emitted Claude asset-producer agent.

The CLI installer places agents per scope: project installs write
<repo>/.github/agents/ and <repo>/.cursor/agents/; user-level installs
write ~/.copilot/agents/ (Copilot's user dir, not ~/.github/) and
~/.cursor/agents/, overwriting stale impeccable-* copies. Because
Copilot lets user-level agents shadow same-named project ones, a project
install warns when shadowing copies exist; Cursor gives project agents
precedence, so no warning there.

new-work.md and visualize.md extend their harness-naming clauses with
the Cursor and Copilot invocations. The degraded/ fallbacks keep
shipping for surfaces where the model still fails to delegate.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

skill/reference/new-work.md

@@ -104,6 +104,6 @@ Preserve semantics, accessibility, performance, responsiveness, project conventi
 
 Inspect desktop and mobile in one batched screenshot round, critique the render against the user's request and the direction contract, fix material gaps, and confirm with one final round; two rounds is the ceiling, and fixes batch between them rather than earning per-tweak screenshots. On a Persuade surface, verify the mode did its job: a first-time visitor should know what this is, why it matters, and what to do within seconds, in the form's own vocabulary.
 
-After the second inspection round the build thread's polishing is over: no further defect hunts, micro-edit scripts, or rebuilds here; whatever remains ships through the handoffs, where a fresh context does the finding better and cheaper. Capture desktop and mobile screenshots to files, then spawn the shipped finish reviewer, `impeccable-finish-reviewer` (`impeccable_finish_reviewer` in codex), with the original request, confirmed answers, the artifact path, the screenshot paths, its direction contract, existing hook findings, and the QUALITY BAR card and approved comp paths. The reviewer has no browser; screenshots you fail to pass are checks it cannot run. Verify its return carries the five contract sections; on an empty or thrashed return, respawn once with the same inputs before doing anything else. This review never runs inside the build thread. Only a harness whose tool surface has no subagent capability at all substitutes a fresh in-thread pass after stepping fully out of the build context, run from [degraded/finish-reviewer.md](degraded/finish-reviewer.md), and a substituted or failed-and-replaced review is disclosed in one line at finish, never silently. Apply the material fixes in one batch, rebuild once, and recapture the same viewports. A recapture measures positions, loading, and overflow; it cannot measure whether a fix reached the quality the finding named, so send the recaptured screenshots back to the same reviewer for a verdict scoring every material fix resolved, partial, or unresolved (through the harness's agent continuation; without one, run the scoring fresh from [degraded/finish-reviewer.md](degraded/finish-reviewer.md)'s Verdict Pass). Fixes scored partial or unresolved get exactly one more batch, recapture, and verdict; two correction rounds is the ceiling, the second verdict ends the work whatever it says, and the reviewer's findings are the only list you work from, never your own re-opened hunt. Report the final verdict table to the user as it stands, open items included: presenting mechanical confirmation as artistic success is how a failed build gets announced as a finished one. Do not run a second detector. <!-- rule:skill-verdict-bounds-the-finish --> <!-- rule:skill-finish-separate-reviewer -->
+After the second inspection round the build thread's polishing is over: no further defect hunts, micro-edit scripts, or rebuilds here; whatever remains ships through the handoffs, where a fresh context does the finding better and cheaper. Capture desktop and mobile screenshots to files, then spawn the shipped finish reviewer, `impeccable-finish-reviewer` (`impeccable_finish_reviewer` in codex; `/impeccable-finish-reviewer` in Cursor; on GitHub Copilot say "Use the impeccable-finish-reviewer agent"), with the original request, confirmed answers, the artifact path, the screenshot paths, its direction contract, existing hook findings, and the QUALITY BAR card and approved comp paths. The reviewer has no browser; screenshots you fail to pass are checks it cannot run. Verify its return carries the five contract sections; on an empty or thrashed return, respawn once with the same inputs before doing anything else. This review never runs inside the build thread. Only a harness whose tool surface has no subagent capability at all substitutes a fresh in-thread pass after stepping fully out of the build context, run from [degraded/finish-reviewer.md](degraded/finish-reviewer.md), and a substituted or failed-and-replaced review is disclosed in one line at finish, never silently. Apply the material fixes in one batch, rebuild once, and recapture the same viewports. A recapture measures positions, loading, and overflow; it cannot measure whether a fix reached the quality the finding named, so send the recaptured screenshots back to the same reviewer for a verdict scoring every material fix resolved, partial, or unresolved (through the harness's agent continuation; without one, run the scoring fresh from [degraded/finish-reviewer.md](degraded/finish-reviewer.md)'s Verdict Pass). Fixes scored partial or unresolved get exactly one more batch, recapture, and verdict; two correction rounds is the ceiling, the second verdict ends the work whatever it says, and the reviewer's findings are the only list you work from, never your own re-opened hunt. Report the final verdict table to the user as it stands, open items included: presenting mechanical confirmation as artistic success is how a failed build gets announced as a finished one. Do not run a second detector. <!-- rule:skill-verdict-bounds-the-finish --> <!-- rule:skill-finish-separate-reviewer -->
 
 Then spawn the shipped documenter, `impeccable-documenter` (`impeccable_documenter` in codex), with the project root, the artifact path, the direction contract, PRODUCT.md, the [document.md](document.md) reference path, and the boundary to write at; it records DESIGN.md and the sidecar from the built world, ground truth over intention; without subagents the pass runs from [degraded/documenter.md](degraded/documenter.md). A clean detector pass is not finished; finished is the contract kept, the comp honored, the review closed, and the system recorded. <!-- rule:skill-documenter-records-the-world -->

skill/reference/visualize.md

@@ -36,6 +36,6 @@ Treat the comp as a north star, not something to trace, and know what that allow
 
 Generation context is part of the asset: the thread that wrote a prompt knows what the image contains, why, and how it is meant to sit in the layout, and a build composed by a thread without that knowledge places assets it does not understand. So prefer generating build-critical imagery in the build thread when the budget allows, and when a subagent produces assets instead, every asset must carry its prompt, and the builder reads those prompts before composing a single one of them. The carrier is uniform across harnesses: after generating any image with any tool, native or `generate-image.mjs` (which does it automatically), run `node {{scripts_path}}/embed-prompt.mjs <image> --prompt "<the prompt used>"` so the intent lives inside the file itself and survives copies between machines and harnesses; `--read` recovers it from any impeccable-generated image.
 
-When clean raster ingredients are required and the harness runs subagents, use the shipped asset producer, `impeccable-asset-producer` (`impeccable_asset_producer` in codex): give it the approved comp, output paths, required dimensions and formats, transparency needs, crop notes, and what must remain semantic code. Otherwise produce the minimum required assets in the current thread by the book: load [degraded/asset-producer.md](degraded/asset-producer.md) and follow it inline, with whatever generation exists, the native tool or generate-image.mjs.
+When clean raster ingredients are required and the harness runs subagents, use the shipped asset producer, `impeccable-asset-producer` (`impeccable_asset_producer` in codex; `/impeccable-asset-producer` in Cursor; on GitHub Copilot say "Use the impeccable-asset-producer agent"): give it the approved comp, output paths, required dimensions and formats, transparency needs, crop notes, and what must remain semantic code. Otherwise produce the minimum required assets in the current thread by the book: load [degraded/asset-producer.md](degraded/asset-producer.md) and follow it inline, with whatever generation exists, the native tool or generate-image.mjs.
 
 Return to [new-work.md](new-work.md) for the direction contract, implementation, and the finishing pass.