feat(ce-demo-reel): add local save as alternative to catbox upload (#647)

plugins/compound-engineering/skills/ce-commit-push-pr/SKILL.md

@@ -194,7 +194,7 @@ Use this branch diff (not the working-tree diff) for the evidence decision. If t
 
 **Evidence decision (before delegation).** If the branch diff changes observable behavior (UI, CLI output, API behavior with runnable code, generated artifacts, workflow output) and evidence is not otherwise blocked (unavailable credentials, paid services, deploy-only infrastructure, hardware), ask: "This PR has observable behavior. Capture evidence for the PR description?"
 
-- **Capture now** -- load the `ce-demo-reel` skill with a target description inferred from the branch diff. ce-demo-reel returns `Tier`, `Description`, and `URL`. Note the captured evidence so it can be passed as free-text steering to `ce-pr-description` (e.g., "include the captured demo: <URL> as a `## Demo` section") or spliced into the returned body before apply. If capture returns `Tier: skipped` or `URL: "none"`, proceed with no evidence.
+- **Capture now** -- load the `ce-demo-reel` skill with a target description inferred from the branch diff. ce-demo-reel returns `Tier`, `Description`, `URL`, and `Path`. Exactly one of `URL` or `Path` contains a real value; the other is `"none"`. If capture returns a public URL, pass it as steering to `ce-pr-description` (e.g., "include the captured demo: <URL> as a `## Demo` section") or splice into the returned body before apply. If capture returns a local `Path` instead (user chose local save), pass steering that notes evidence was captured but is local-only (e.g., "evidence was captured locally — note in the PR that a demo was recorded but is not embedded because the user chose local save"). If capture returns `Tier: skipped` or both `URL` and `Path` are `"none"`, proceed with no evidence.
 - **Use existing evidence** -- ask for the URL or markdown embed, then pass it as free-text steering to `ce-pr-description` or splice in before apply.
 - **Skip** -- proceed with no evidence section.
 
@@ -202,7 +202,7 @@ When evidence is not possible (docs-only, markdown-only, changelog-only, release
 
 **Delegate title and body generation to `ce-pr-description`.** Load the `ce-pr-description` skill:
 
-- **For a new PR** (no existing PR found in Step 3): invoke with `base:<base-remote>/<base-branch>` using the already-resolved base from earlier in this step, so `ce-pr-description` describes the correct commit range even when the branch targets a non-default base (e.g., `develop`, `release/*`). Append any captured-evidence context or user focus as free-text steering (e.g., "include the captured demo: <URL> as a `## Demo` section").
+- **For a new PR** (no existing PR found in Step 3): invoke with `base:<base-remote>/<base-branch>` using the already-resolved base from earlier in this step, so `ce-pr-description` describes the correct commit range even when the branch targets a non-default base (e.g., `develop`, `release/*`). Append any captured-evidence context or user focus as free-text steering (e.g., "include the captured demo: <URL> as a `## Demo` section", or "evidence captured locally — not embedded" for local saves).
 - **For an existing PR** (found in Step 3): invoke with the full PR URL from the Step 3 context (e.g., `https://github.com/owner/repo/pull/123`). The URL preserves repo/PR identity even when invoked from a worktree or subdirectory; the skill reads the PR's own `baseRefName` so no `base:` override is needed. Append any focus steering as free text after the URL.
 
 **Steering discipline.** Pass only what the diff cannot reveal: a user focus ("emphasize the performance win"), a specific framing concern ("this needs to read as a migration not a feature"), or a pointer to institutional knowledge. Do NOT dump an exhaustive scope summary or a numbered list of every change — `ce-pr-description` reads the diff itself. Over-specified steering encourages the downstream skill to cover everything passed in, producing verbose output. Cap steering at roughly 100 words; if a longer framing feels necessary, trust the diff and cut.