make-montagelisted

Build a beat-synced montage from the arguments: `$0` is the video path, `$1` is the audio path, `$2` is the optional output path (default: `montage.mp4` in the current working directory). ## How this skill thinks Cadence runs as a **three-party conversation**: you (Claude) orchestrate tool calls; Gemini acts as the subject-matter expert for video/audio perception and creative judgment; the user speaks through you. Gemini's reasoning carries *across* the calls in a session — it remembers what moments it found, which segment it picked, and why. Your job is to synthesize the user's raw request into a coherent `userIntent` at session-begin, then make targeted calls and inspect results. ## Interpreting the user's request Split intent across two axes before calling tools: - **Content intent** — *what* should appear in the montage. Feeds the session's `userIntent` (shapes every Gemini call) and the optional per-call `focusPrompt` for refinement. - **Arrangement style** — *how* the content should be cut. Passed as `stylePrompt` to `reason-plan-edit`. Enrich vague user phrases into concrete criteria before passing. "Badass close combat" → "physical melee engagements — punches, kicks, grapples, throws, blocks; exclude ranged attacks, environmental destruction, and dialogue." If the user hasn't given arrangement direction, ask. Reasonable defaults: - **Fast-paced anime action**: rapid cross-cutting, rarely hold a shot, anchor hardest hits on downbeats - **Cinematic build**: long