Issue #10: rewards bootstrapping

apps/econ/migrations/0015_objective.sql

@@ -0,0 +1,22 @@
+-- Per-player objective progress — the daily/weekly challenge checklist. The client
+-- reports progress with `/api/objectives/v1/updateobjective` and reads it back from
+-- `/api/objectives/v1/myprogress`.
+--
+-- An objective is keyed by (account, group, index) — the client's own identifiers —
+-- so updates upsert on that triple. `has_claimed_reward` latches on first completion
+-- so a reward can't be paid twice. `group`/`index` are SQL keywords, hence the
+-- `group_id`/`idx` column names. Owned by the `econ` worker; generated from
+-- src/objectives-db.ts (SCHEMA_DDL) — keep in sync.
+
+CREATE TABLE IF NOT EXISTS objective (
+  account_id INTEGER NOT NULL,
+  group_id INTEGER NOT NULL,
+  idx INTEGER NOT NULL,
+  progress REAL NOT NULL DEFAULT 0,
+  visual_progress REAL NOT NULL DEFAULT 0,
+  is_completed INTEGER NOT NULL DEFAULT 0,
+  is_rewarded INTEGER NOT NULL DEFAULT 0,
+  has_claimed_reward INTEGER NOT NULL DEFAULT 0,
+  PRIMARY KEY (account_id, group_id, idx)
+  );
+CREATE INDEX IF NOT EXISTS idx_objective_account ON objective (account_id);