Curation v2 step 1: three-way feedback, rating events, reader profile

- Migration 0002: rating_events, article_embeddings, interest_embeddings,
  article_assessments, candidate_runs, runs.config_json/provider_costs_json,
  issue_articles.why; copies ratings into rating_events and drops ratings and
  feed_priors (scores stays until step 4).
- Vote is Loved | Good | NotForMe; legacy `up` links still verify as Loved.
- Footer offers Loved it / Good / Not for me; the confirmation page offers the
  other two so a mis-tap can be corrected. handle_rating appends one event.
- db::current_ratings implements the latest-explicit-event rule with summaries
  and facets; `ratings list|set|clear` CLI appends source='cli' events.
- data/profile.md replaces the hard-coded reader prose; the system prompt is
  rebuilt every run in the §8.4 order with a recent-verdicts block.
- Weekly rebuild reads summaries, facets and notes; feed priors removed.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01A1rCLQeKBgnBo3oTgHuTMe

config.example.toml

@@ -22,7 +22,8 @@ database_path = "/var/lib/daily-epub/daily-epub.db"
 # Default output directory for generated artifacts (overridden by `--out`).
 out_dir = "/var/lib/daily-epub/out"
 
-# Path to the Scour interests OPML used to seed the taste profile (§3.6).
+# Hand-maintained reader profile and Scour interests merged into the system prompt.
+profile_path = "data/profile.md"
 interests_opml = "data/scour-interests.opml"
 
 [miniflux]
@@ -59,6 +60,12 @@ sections = [
   "From the Blogroll",
 ]
 
+[curation.feedback]
+loved_value = 1.0
+good_value = 0.35
+not_for_me_value = -1.0
+verdicts_in_prompt = 60
+
 [publish]
 # Where both EPUB editions land, and what the OPDS feed lists. BookOrbit is
 # optional — it just watches this folder if you run it.