feat(linkedin): integrate state-updater.mjs across all commands and hooks

Replace manual YAML editing instructions with deterministic
state-updater.mjs calls in 8 content commands (post, quick, react,
pipeline, first-post, video, publish, carousel) and 2 hook prompts
(state-update-reminder, post-creation-automation). Batch.md gets note
that state updates happen at publish time.

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

plugins/linkedin-thought-leadership/hooks/prompts/post-creation-automation.md

@@ -19,7 +19,7 @@ Based on the day of the week, suggest the next optimal posting window:
 Remind: 'Before posting, spend 15-20 minutes on 5x5x5 pre-engagement: find 5 people with overlapping audiences, comment thoughtfully on their recent posts.'
 
 **4. Content Logging**
-Note: The post topic and hook should be logged to the state file when the session ends (handled by Stop hook).
+Note: State tracking is handled deterministically by `state-updater.mjs` via the Stop hook. Do not manually edit the state file YAML frontmatter.
 
 **5. Voice Sample Suggestion**
 

plugins/linkedin-thought-leadership/hooks/prompts/state-update-reminder.md

@@ -1,23 +1,34 @@
 Before ending this LinkedIn content session, do two things:
 
 **1. Update State File**
-If a post was created or finalized in this session, update `~/.claude/linkedin-thought-leadership.local.md`:
-- Set `last_post_date` to today (YYYY-MM-DD format)
-- Set `last_post_topic` to the main topic (use the matching `expertise_areas` value when possible for consistent pillar tracking)
-- If `first_post_date` is null and a post was created, set `first_post_date` to today (YYYY-MM-DD). This is set ONCE and never changed after that.
-- Check if ISO week has changed — if so, reset `posts_this_week` to 0 and update `current_week`
-- Increment `posts_this_week`
-- Update streak: increment `current_streak` if posting on consecutive days (gap <= 1 day), reset to 1 if gap > 2 days
-- Update `longest_streak` if current exceeds it
-- Add entry to '## Recent Posts' section: [YYYY-MM-DD] "Hook text..." (char count) - topic_area (use expertise_area name for consistent pillar tracking)
+If a post was created or finalized in this session, use the state-updater script:
+```bash
+node --input-type=module -e "
+import { writeState, updatePostTracking } from '${CLAUDE_PLUGIN_ROOT}/hooks/scripts/state-updater.mjs';
+writeState(content => updatePostTracking(content, {
+  postDate: 'YYYY-MM-DD',
+  postTopic: 'topic_area',
+  hookText: 'First 60 chars of hook...',
+  charCount: NNNN,
+  format: 'post'
+}));
+"
+```
+Replace the placeholder values with actual post data from this session.
+
+If the user mentioned or updated their follower count during this session:
+```bash
+node --input-type=module -e "
+import { writeState, updateFollowerCount } from '${CLAUDE_PLUGIN_ROOT}/hooks/scripts/state-updater.mjs';
+writeState(content => updateFollowerCount(content, {
+  count: NNNN,
+  month: 'YYYY-MM'
+}));
+"
+```
+
 - Clear `next_planned_topic` if it was used, or set it to the next suggested topic
 - If analytics data was imported in this session, set `last_import_date` to today (YYYY-MM-DD) and `last_import_week` to current ISO week (YYYY-WXX)
-- If the user mentioned or updated their follower count during this session:
-  - Update `follower_count` to the new value
-  - If the month changed since last monthly_growth entry, append: {month: "YYYY-MM", count: X, delta: X}
-  - Recalculate `growth_rate_needed`: (follower_target - follower_count) / months_remaining
-  - Recalculate `projected_10k_date` from average of last 3 monthly deltas
-  - Add entry to '## Milestone Log': [YYYY-MM] count (+delta)
 
 **2. Pre-Publish Reminders** (only if a post was created)