refactor(cli)!: rename all skills and agents to consistent ce- prefix (#503)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

plugins/compound-engineering/skills/ce-ideate/references/universal-ideation.md

@@ -1,6 +1,6 @@
 # Universal Ideation Facilitator
 
-This file is loaded when ce:ideate detects an elsewhere-mode topic with no software surface at all — naming (independent of product), narrative writing, personal decisions, non-digital business strategy, physical-product design. Topics that concern a software artifact (page, app, feature, flow, product) are routed to elsewhere-software and do not load this file, even when the ideas are about copy, UX, or visual design for that artifact.
+This file is loaded when ce-ideate detects an elsewhere-mode topic with no software surface at all — naming (independent of product), narrative writing, personal decisions, non-digital business strategy, physical-product design. Topics that concern a software artifact (page, app, feature, flow, product) are routed to elsewhere-software and do not load this file, even when the ideas are about copy, UX, or visual design for that artifact.
 
 Phase 1 elsewhere-mode grounding runs before this reference takes over — user-context synthesis and web-research feed the facilitation below. Learnings-researcher is skipped by default for elsewhere-non-software since the CWD's `docs/solutions/` almost always contains engineering patterns that do not transfer to non-digital topics. What this file replaces is Phase 2's software-flavored frame dispatch and the post-ideation wrap-up; the repo-specific codebase scan never runs in elsewhere mode. Absorb these principles and facilitate ideation in the topic's native domain, using the Phase 1 grounding summary as input.
 
@@ -57,7 +57,7 @@ Use the platform's blocking question tool (`AskUserQuestion` in Claude Code, `re
 
 - **Refine the ideation in conversation (or stop here — no save)** — add ideas, re-evaluate, or deepen analysis without writing anything. Ending the conversation at any point after this pick is a valid no-save exit.
 - **Open and iterate in Proof** — invoke the Proof HITL review path per the §6.2 contract in `references/post-ideation-workflow.md`: upload the survivors to Proof (rendered to a temp file since no local file is written in non-software elsewhere mode), iterate via comments, and exit cleanly with the Proof URL as the canonical record on successful return. Proof iteration is typically the terminal act in this mode, so the flow does not force another menu choice afterward. Only an `aborted` status returns to this menu. On persistent Proof failure, apply the §6.5 Proof Failure Ladder from `references/post-ideation-workflow.md` so the iteration attempt is not stranded without recovery.
-- **Brainstorm a selected idea** — go deeper on one idea through dialogue. Unlike repo mode, this is not the first step of an implementation chain — there is no `ce:plan` → `ce:work` after; `ce:brainstorm` in universal mode develops the idea further (e.g., expands a name into a brand brief, a plot into an outline, a decision into a weighed framework) and ends there. Persist first per the §6.3 contract in `references/post-ideation-workflow.md`: save the survivors to Proof (the elsewhere-mode default) or to `docs/ideation/` when the user explicitly asked for a local file, mark the chosen idea as `Explored`, then load `ce:brainstorm` with that idea as the seed. On a successful Proof return (`proceeded` or `done_for_now`), continue into the brainstorm handoff per §5.2's caller-aware return rule; on `aborted`, return to this menu without handing off. On persistent Proof failure, apply the §6.5 Proof Failure Ladder before ending so the brainstorm seed is preserved through a local-save fallback.
+- **Brainstorm a selected idea** — go deeper on one idea through dialogue. Unlike repo mode, this is not the first step of an implementation chain — there is no `ce-plan` → `ce-work` after; `ce-brainstorm` in universal mode develops the idea further (e.g., expands a name into a brand brief, a plot into an outline, a decision into a weighed framework) and ends there. Persist first per the §6.3 contract in `references/post-ideation-workflow.md`: save the survivors to Proof (the elsewhere-mode default) or to `docs/ideation/` when the user explicitly asked for a local file, mark the chosen idea as `Explored`, then load `ce-brainstorm` with that idea as the seed. On a successful Proof return (`proceeded` or `done_for_now`), continue into the brainstorm handoff per §5.2's caller-aware return rule; on `aborted`, return to this menu without handing off. On persistent Proof failure, apply the §6.5 Proof Failure Ladder before ending so the brainstorm seed is preserved through a local-save fallback.
 - **Save and end** — share the survivors to Proof (the elsewhere-mode default) and end. Use `docs/ideation/` instead only when the user explicitly asks for a local file. On Proof failure (including after the single orchestrator-side retry), apply the §6.5 Proof Failure Ladder from `references/post-ideation-workflow.md` — surface the local-save fallback menu (custom path or skip) before ending so the user is not stranded without a recovery path.
 
 No-save exit is supported without a dedicated menu option. Pick Refine and stop the conversation, or use the question tool's free-text escape to say so directly — persistence is opt-in and the terminal review loop is already a complete ideation cycle.