unic-spec-review S6: Figma + live sources — Dev Mode MCP designs/annotations and Playwright MCP, fail loud if absent

[orioltf]

Parent

Epic: #200 — unic-spec-review plugin.

What to build

Add the two non-Confluence input sources so the Spec-versus-Design and Spec-versus-Live dimensions have real material to compare against.

• Figma (Dev Mode MCP): read designs and their annotations for Figma page/frame links the classifier identified, and feed them to the Spec-versus-Design dimension.
• Live system (Playwright MCP): inspect the live production system for live URLs, and feed observations to the Spec-versus-Live dimension.

Both MCPs are discovered at runtime. If a required MCP is absent for a source that the pasted links demand, the run fails loudly for that source with explicit guidance — it never silently skips the source. (This complements the up-front /spec-doctor check from S2.)

Read-only: Figma and the live system are inputs only; nothing is posted to either.

Acceptance criteria

• Figma page/frame links are read via the Figma Dev Mode MCP (designs + annotations) and supplied to the Spec-versus-Design agent.
• Live URLs are inspected via the Playwright MCP and observations supplied to the Spec-versus-Live agent.
• If the Figma or Playwright MCP is absent when a pasted link requires it, the run fails loudly for that source with remediation guidance; it never silently degrades.
• Figma and the live system are treated as read-only inputs; no writes to either.
• Pure helpers introduced for shaping MCP inputs/outputs get node:test unit tests with injected deps; the MCP-driven gathering orchestrators and agent prompts are not unit-tested (exercised via manual runs).
• PR adds CHANGELOG.md bullets under [Unreleased] and bumps the patch version; verify:changelog passes. No em dash in authored text (except the mandated CHANGELOG version header).

Blocked by

• unic-spec-review S1: skeleton tracer bullet — classify one URL, fetch page, one Gaps agent, write report #202 (S1 — classifier identifies figma/live link kinds).
• unic-spec-review S4: full review engine — all dimension + Green/Yellow/Red agents, Blue orchestrator, ranked hat-grouped triage #205 (S4 — Spec-versus-Design and Spec-versus-Live agents that consume these sources).