Initial commit: potluck signup app

Go + chi + SQLite + HTMX with SSE live updates.
Soft Brutalism design, emoji picker, Docker deploy.

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

schema.sql

@@ -0,0 +1,30 @@
+CREATE TABLE IF NOT EXISTS events (
+    id         INTEGER PRIMARY KEY AUTOINCREMENT,
+    slug       TEXT    NOT NULL UNIQUE,
+    title      TEXT    NOT NULL,
+    date       TEXT    NOT NULL,       -- e.g. "Saturday, June 14"
+    time       TEXT    NOT NULL,       -- e.g. "2:00 PM"
+    location   TEXT    NOT NULL,
+    admin_token TEXT   NOT NULL UNIQUE,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS slots (
+    id         INTEGER PRIMARY KEY AUTOINCREMENT,
+    event_id   INTEGER NOT NULL REFERENCES events(id) ON DELETE CASCADE,
+    name       TEXT    NOT NULL,
+    emoji      TEXT    NOT NULL DEFAULT '',
+    max_claims INTEGER NOT NULL DEFAULT 1,
+    sort_order INTEGER NOT NULL DEFAULT 0
+);
+
+CREATE TABLE IF NOT EXISTS claims (
+    id         INTEGER PRIMARY KEY AUTOINCREMENT,
+    slot_id    INTEGER NOT NULL REFERENCES slots(id) ON DELETE CASCADE,
+    name       TEXT    NOT NULL,
+    note       TEXT    NOT NULL DEFAULT '',
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_slots_event ON slots(event_id);
+CREATE INDEX IF NOT EXISTS idx_claims_slot ON claims(slot_id);