feat: v0.2.1 — fix encryption, diverse multi-topic generation, UX fixes

- Rewrite encryption with "enc:" prefix to permanently eliminate
  the double-encryption bug on settings save
- Add one-time migration to clear legacy non-prefixed encrypted values
- Rewrite content analyzer prompts to request N distinct diverse topics
  across 5 categories (question, complaint, comparison, news, guide)
- Pass target_count*2 from pipeline to analyzer for headroom
- Add skip_dedup flag so manual Generate Now always produces content
- Generate Now button now sends force=1 to clear stale locks
- Rename OpenRouter provider files to PSR-4 convention (hyphenated)
- Switch default models to google/gemini-2.5-flash-lite
- Clean up reddit_debug log channel to standard 'reddit'
- Bump version to 0.2.1

Cost: ~$0.003/article with Gemini 2.0 Flash, ~34s pipeline.

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

assets/js/admin.js

@@ -66,7 +66,8 @@
 			method: 'POST',
 			data: {
 				action: 'prautoblogger_generate_now',
-				nonce: config.generateNonce
+				nonce: config.generateNonce,
+				force: '1' // Always clear stale locks on manual runs.
 			},
 			timeout: 300000, // 5 minutes — generation can be slow.
 			success: function (response) {