feat: ingest private events; surface public-only

The DB now stores everything GitHub will give us, the API only ever
returns public events (for now).

Endpoint switch in the github poller: when GITHUB_TOKEN is set we
hit /users/{u}/events (public + private), otherwise fall back to
/users/{u}/events/public. Either way each event's top-level `public`
boolean is captured into a new column.

Schema:
  migration 0003_event_public.sql adds events.public BOOLEAN NOT NULL
  DEFAULT true, plus an index on (public, occurred_at DESC).

Wire:
  Event gains a `public: bool` field.
  EventQuery gains `include_private: bool` (default false).
  list_events and source_summaries gate on it.
  moments-api pins include_private = false at every call site —
  threading it as a query param is a future-auth concern, not now.

The default-true on the column keeps existing rows correct: the 11
events already in the DB came from /events/public and are genuinely
public.

After this change, clear poller_state so the next worker run does a
fresh backfill via /events:

  DELETE FROM poller_state WHERE source = 'github';

Tests: +2 in github poller (private flag captured, default-public
on missing field) — 10 total green.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/moments-data/src/github.rs

@@ -58,11 +58,17 @@ impl GithubSource {
     }
 
     fn first_page_url(&self) -> String {
-        // Public events endpoint: works without auth (60/hr unauth, 5000/hr authed).
-        // The non-public `/users/{u}/events` endpoint now requires auth and returns
-        // private-repo activity, which we don't want on a public timeline anyway.
+        // With a token: hit `/events`, which returns public + private events the
+        // authenticated user can see. We store everything; the API gates what
+        // gets surfaced to the public timeline via the `public` column.
+        // Without a token: fall back to `/events/public` (anonymous-readable).
+        let endpoint = if self.config.token.is_some() {
+            "events"
+        } else {
+            "events/public"
+        };
         format!(
-            "https://api.github.com/users/{}/events/public?per_page={}",
+            "https://api.github.com/users/{}/{endpoint}?per_page={}",
             self.config.user, self.config.per_page
         )
     }
@@ -172,11 +178,17 @@ fn parse_github_event(raw: serde_json::Value) -> Option<Event> {
     let occurred_at = DateTime::parse_from_rfc3339(created_at_str)
         .ok()?
         .with_timezone(&Utc);
+    // GitHub marks each event with a top-level `public` boolean. Events from
+    // `/events/public` are always true; `/events` may include false. Default
+    // to true if missing — that matches the safer-of-the-two-mistakes (under-
+    // expose) and the `/events/public` endpoint behaviour.
+    let public = raw.get("public").and_then(serde_json::Value::as_bool).unwrap_or(true);
     Some(Event {
         id: format!("github:{id}"),
         source: Source::Github,
         action: event_type,
         occurred_at,
+        public,
         payload: raw,
     })
 }
@@ -208,6 +220,7 @@ mod tests {
             "id": "12345",
             "type": "PushEvent",
             "created_at": "2026-04-15T10:30:00Z",
+            "public": true,
             "actor": { "login": "grenade" },
             "repo": { "name": "grenade/moments" },
             "payload": { "ref": "refs/heads/main" }
@@ -216,9 +229,39 @@ mod tests {
         assert_eq!(ev.id, "github:12345");
         assert_eq!(ev.source, Source::Github);
         assert_eq!(ev.action, "PushEvent");
+        assert!(ev.public);
         assert_eq!(ev.payload, raw);
     }
 
+    #[test]
+    fn private_event_marked_private() {
+        let raw = serde_json::json!({
+            "id": "67890",
+            "type": "PushEvent",
+            "created_at": "2026-04-15T10:30:00Z",
+            "public": false,
+            "actor": { "login": "grenade" },
+            "repo": { "name": "grenade/private-thing" },
+            "payload": {}
+        });
+        let ev = parse_github_event(raw).expect("parses");
+        assert!(!ev.public);
+    }
+
+    #[test]
+    fn missing_public_field_defaults_to_public() {
+        let raw = serde_json::json!({
+            "id": "11111",
+            "type": "PushEvent",
+            "created_at": "2026-04-15T10:30:00Z",
+            "actor": { "login": "grenade" },
+            "repo": { "name": "grenade/x" },
+            "payload": {}
+        });
+        let ev = parse_github_event(raw).expect("parses");
+        assert!(ev.public);
+    }
+
     #[test]
     fn rejects_event_missing_id() {
         let raw = serde_json::json!({ "type": "PushEvent", "created_at": "2026-01-01T00:00:00Z" });

crates/moments-data/src/lib.rs

@@ -43,18 +43,20 @@ impl EventReader for PgStore {
 
         let rows = sqlx::query(
             r#"
-            SELECT id, source, action, occurred_at, payload
+            SELECT id, source, action, occurred_at, public, payload
             FROM events
             WHERE ($1::timestamptz IS NULL OR occurred_at >= $1)
               AND ($2::timestamptz IS NULL OR occurred_at <  $2)
               AND ($3::text[]      IS NULL OR source = ANY($3))
+              AND ($4::bool        OR public = true)
             ORDER BY occurred_at DESC
-            LIMIT $4
+            LIMIT $5
             "#,
         )
         .bind(query.from)
         .bind(query.to)
         .bind(sources.as_deref())
+        .bind(query.include_private)
         .bind(query.limit as i64)
         .fetch_all(&self.pool)
         .await
@@ -68,13 +70,14 @@ impl EventReader for PgStore {
                     source: Source::from_str(&source_str).map_err(map_err)?,
                     action: r.try_get("action").map_err(map_err)?,
                     occurred_at: r.try_get("occurred_at").map_err(map_err)?,
+                    public: r.try_get("public").map_err(map_err)?,
                     payload: r.try_get("payload").map_err(map_err)?,
                 })
             })
             .collect()
     }
 
-    async fn source_summaries(&self) -> Result<Vec<SourceSummary>, StoreError> {
+    async fn source_summaries(&self, include_private: bool) -> Result<Vec<SourceSummary>, StoreError> {
         let rows = sqlx::query(
             r#"
             SELECT source,
@@ -82,10 +85,12 @@ impl EventReader for PgStore {
                    MIN(occurred_at) AS earliest,
                    MAX(occurred_at) AS latest
             FROM events
+            WHERE $1::bool OR public = true
             GROUP BY source
             ORDER BY source
             "#,
         )
+        .bind(include_private)
         .fetch_all(&self.pool)
         .await
         .map_err(map_err)?;
@@ -187,12 +192,13 @@ impl EventWriter for PgStore {
         for ev in events {
             let n = sqlx::query(
                 r#"
-                INSERT INTO events (id, source, action, occurred_at, payload)
-                VALUES ($1, $2, $3, $4, $5)
+                INSERT INTO events (id, source, action, occurred_at, public, payload)
+                VALUES ($1, $2, $3, $4, $5, $6)
                 ON CONFLICT (id) DO UPDATE
                 SET source      = EXCLUDED.source,
                     action      = EXCLUDED.action,
                     occurred_at = EXCLUDED.occurred_at,
+                    public      = EXCLUDED.public,
                     payload     = EXCLUDED.payload
                 "#,
             )
@@ -200,6 +206,7 @@ impl EventWriter for PgStore {
             .bind(ev.source.as_str())
             .bind(&ev.action)
             .bind(ev.occurred_at)
+            .bind(ev.public)
             .bind(&ev.payload)
             .execute(&mut *tx)
             .await