feat(linkedin): reduce interactive steps in quick, react, pipeline commands

quick.md:
- Replace 8-option post type menu with context inference
- Auto-select CTA based on post type
- Remove proactive alternative version offering
- AskUserQuestion: 0 in main flow (was 1 implicit menu)

react.md:
- Auto-select strongest angle instead of 3-option AskUserQuestion
- Replace 6-option refinement AskUserQuestion with plain text options
- Same treatment for comparison path (Step 4b)
- AskUserQuestion: 1 in main flow (multi-URL only, was 3)

pipeline.md:
- Skip ideation ask if topic provided with command invocation
- Auto-propose planned topic without AskUserQuestion
- Inline angle selection (auto-select strongest)
- AskUserQuestion: 2 in main flow (ideation fallback + scheduling, was 3)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/linkedin-thought-leadership/commands/pipeline.md

@@ -38,31 +38,20 @@ Next planned topic: [topic or "none"]
 
 ## Step 1: Ideation
 
-Help the user select or generate a topic.
+If the user already provided a topic with the command invocation (e.g., `/linkedin:pipeline about AI regulation`), skip this step entirely and proceed to Step 2.
 
-**Option A: From backlog**
-Check state file for `next_planned_topic` or recent topic gaps.
-
-**Option B: From input**
-Ask the user what they want to post about.
-
-**Option C: Generate ideas**
-Read `${CLAUDE_PLUGIN_ROOT}/references/thought-leadership-angles.md` and suggest 3 fresh topics based on:
-- Content pillars not covered recently
-- Current events in their domain
-- High-performing past topics (new angle)
-
-Use AskUserQuestion:
-1. Use a planned topic
-2. I have an idea already
-3. Generate ideas for me
+Otherwise, check state file for `next_planned_topic`:
+- If a planned topic exists, propose it: "You had planned to write about [topic]. Proceeding with that. (Say 'different topic' if you'd prefer another.)" — do NOT use AskUserQuestion.
+- If no planned topic and no user input, use AskUserQuestion to ask:
+  1. I have an idea already
+  2. Generate ideas for me
 
 ## Step 2: Draft
 
-Once topic is chosen, create the draft using the full post workflow:
+Once topic is chosen, create the draft:
 
-1. **Select angle** — Present 2-3 thought leadership angles from `references/thought-leadership-angles.md`
-2. **Choose format** — Text post, carousel, video script based on content type
+1. **Select angle** — Auto-select the strongest angle from `references/thought-leadership-angles.md` based on topic and user's expertise. Present ONE recommended angle with reasoning. Do NOT use AskUserQuestion — just proceed. If user disagrees, offer alternatives.
+2. **Infer format** — Default to text post. Only mention carousel/video as a note if particularly well-suited.
 3. **Write draft** — Following the structure:
    - Hook: 110-140 characters
    - Context: 200-300 characters