initial public release

internal/store/migrations/006_tracker.sql

@@ -0,0 +1,18 @@
+-- Phase 5: Application tracker — event log + indexes for state-machine queries.
+-- Existing applications table already has the status field with the right values.
+-- This migration adds an immutable event log for audit + follow-up cadence support.
+
+CREATE TABLE IF NOT EXISTS tracker_events (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    application_id INTEGER NOT NULL,
+    from_status TEXT,
+    to_status TEXT NOT NULL,
+    note TEXT,
+    occurred_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (application_id) REFERENCES applications(id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_tracker_events_application ON tracker_events(application_id);
+CREATE INDEX IF NOT EXISTS idx_tracker_events_occurred ON tracker_events(occurred_at DESC);
+CREATE INDEX IF NOT EXISTS idx_applications_applied_at ON applications(applied_at);
+CREATE INDEX IF NOT EXISTS idx_follow_ups_at ON follow_ups(follow_up_at);