hyperframes: add HTML/CSS/GSAP as a parallel composition runtime

Separates creative grammar (renderer_family) from technical engine
(render_runtime) so HyperFrames can stand alongside Remotion as a
first-class runtime instead of masquerading as a Remotion sub-case.
Locks runtime choice at proposal stage and enforces it end-to-end: the
schemas require it, video_compose routes by it, the reviewer fails
closed on silent swaps, and a parametrized contract test walks every
pipeline manifest to ensure each planning-stage skill explains the
conversation to the user. Adds hyperframes_compose (scaffold/lint/
validate/render/doctor/add_block), a playbook -> CSS style bridge, and
vendored HyperFrames Layer 3 skills from commit d291358, pinned via
PROVENANCE.md for future re-sync. Final_review now records
render_runtime_used and runtime_swap_detected so compose lies are
catchable after the fact.

skills/pipelines/localization-dub/compose-director.md

@@ -4,6 +4,14 @@
 
 Render the localized outputs. The quality bar is intelligibility, timing coherence, and clear version labeling across every language package.
 
+## Runtime Routing (HARD CONSTRAINT — Remotion or FFmpeg only)
+
+Phase 1 deferred from HyperFrames. `edit_decisions.render_runtime` must be `"remotion"` or `"ffmpeg"`. Localization depends on Remotion's caption stack (per-locale subtitle burn) and, when dubbing with lip-sync, on the Remotion TalkingHead pipeline. HyperFrames has no parity for either in Phase 1.
+
+- If `edit_decisions.render_runtime == "hyperframes"`, stop. Re-open the idea stage and surface the constraint — don't silently rewrite the runtime.
+- Per AGENT_GUIDE.md → "Present Both Composition Runtimes (HARD RULE)": the pipeline's constraint does NOT skip the conversation. Present the constraint to the user so they know HyperFrames exists but isn't viable here. Log a `render_runtime_selection` decision with hyperframes `rejected_because: "caption + lip-sync parity deferred on localization-dub"`.
+- Pass `proposal_packet`/`brief` to `video_compose.execute()` for end-to-end runtime-swap detection.
+
 ## Prerequisites
 
 | Layer | Resource | Purpose |

skills/pipelines/localization-dub/idea-director.md

@@ -6,6 +6,12 @@ Use this pipeline when the user has a source video and wants translated delivera
 
 Your first responsibility is to define what kind of localization is actually required, because subtitle-only, dubbed-audio, and lip-synced translation are different jobs.
 
+## Runtime Selection (MANDATORY — present the constraint, don't silently pick)
+
+Lock `render_runtime = "remotion"` (composed deliverables with per-locale caption burn / lip-sync) or `"ffmpeg"` (pure subtitle-burn over source with no composition). **HyperFrames is NOT a valid runtime on this pipeline in Phase 1** — localization depends on Remotion's caption stack and, for dubbed-with-lip-sync, on the Remotion TalkingHead pipeline.
+
+Per AGENT_GUIDE.md → "Present Both Composition Runtimes (HARD RULE)": do NOT silently default to remotion. Tell the user: "HyperFrames is available, but localization-dub depends on Remotion caption + TalkingHead parity that isn't there yet in Phase 1 — remotion is the only viable choice". Record a `render_runtime_selection` decision with hyperframes `rejected_because: "caption + lip-sync parity deferred on localization-dub"`.
+
 ## Reference Inputs
 
 - `docs/localization-dubbing-best-practices.md`