WIP

backend/migrations/20250617183714_init.sql

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+-- Turn on FK support (important for SQLite)
+PRAGMA foreign_keys = ON;
+
+-------------------------------------------------------------------------------
+-- 1. Core lookup “enums” (via CHECK constraints)
+-------------------------------------------------------------------------------
+-- task_status values
+-- ('todo','inprogress','done','cancelled','inreview')
+
+-- task_attempt_status values
+-- ('init','inprogress','paused')
+
+-------------------------------------------------------------------------------
+-- 2. Tables
+-------------------------------------------------------------------------------
+CREATE TABLE projects (
+    id            TEXT PRIMARY KEY,                       -- supply UUID in app
+    name          TEXT NOT NULL,
+    git_repo_path TEXT NOT NULL DEFAULT '' UNIQUE,
+    created_at    TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at    TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE tasks (
+    id          TEXT PRIMARY KEY,
+    project_id  TEXT NOT NULL,
+    title       TEXT NOT NULL,
+    description TEXT,
+    status      TEXT NOT NULL DEFAULT 'todo'
+                   CHECK (status IN ('todo','inprogress','done','cancelled','inreview')),
+    created_at  TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at  TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE
+);
+
+CREATE TABLE task_attempts (
+    id            TEXT PRIMARY KEY,
+    task_id       TEXT NOT NULL,
+    worktree_path TEXT NOT NULL,
+    base_commit   TEXT,
+    merge_commit  TEXT,
+    executor      TEXT,          -- final column name (no JSONB)
+    stdout        TEXT,
+    stderr        TEXT,
+    created_at    TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at    TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE CASCADE
+);
+
+CREATE TABLE task_attempt_activities (
+    id              TEXT PRIMARY KEY,
+    task_attempt_id TEXT NOT NULL,
+    status          TEXT NOT NULL DEFAULT 'init'
+                       CHECK (status IN ('init','inprogress','paused')),
+    note            TEXT,
+    created_at      TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (task_attempt_id) REFERENCES task_attempts(id) ON DELETE CASCADE
+);
+
+-------------------------------------------------------------------------------
+-- 3. Indexes
+-------------------------------------------------------------------------------
+CREATE INDEX idx_tasks_project_id                        ON tasks(project_id);
+CREATE INDEX idx_tasks_status                            ON tasks(status);
+CREATE INDEX idx_task_attempts_task_id                   ON task_attempts(task_id);
+CREATE INDEX idx_task_attempt_activities_attempt_id      ON task_attempt_activities(task_attempt_id);
+CREATE INDEX idx_task_attempt_activities_status          ON task_attempt_activities(status);
+CREATE INDEX idx_task_attempt_activities_created_at      ON task_attempt_activities(created_at);
+
+-------------------------------------------------------------------------------
+-- 4. updated_at auto-maintenance triggers
+--    (fires only when caller hasn’t manually changed updated_at)
+-------------------------------------------------------------------------------
+-- Projects
+CREATE TRIGGER trg_projects_updated_at
+AFTER UPDATE ON projects
+FOR EACH ROW
+WHEN NEW.updated_at = OLD.updated_at
+BEGIN
+    UPDATE projects SET updated_at = CURRENT_TIMESTAMP WHERE id = OLD.id;
+END;
+
+-- Tasks
+CREATE TRIGGER trg_tasks_updated_at
+AFTER UPDATE ON tasks
+FOR EACH ROW
+WHEN NEW.updated_at = OLD.updated_at
+BEGIN
+    UPDATE tasks SET updated_at = CURRENT_TIMESTAMP WHERE id = OLD.id;
+END;
+
+-- Task attempts
+CREATE TRIGGER trg_task_attempts_updated_at
+AFTER UPDATE ON task_attempts
+FOR EACH ROW
+WHEN NEW.updated_at = OLD.updated_at
+BEGIN
+    UPDATE task_attempts SET updated_at = CURRENT_TIMESTAMP WHERE id = OLD.id;
+END;