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      CREATE TABLE IF NOT EXISTS schema_versions (
        id INTEGER PRIMARY KEY,
        version INTEGER UNIQUE NOT NULL,
        applied_at TEXT NOT NULL
      )
    `),this.db.run(`
      CREATE TABLE IF NOT EXISTS sdk_sessions (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        content_session_id TEXT UNIQUE NOT NULL,
        memory_session_id TEXT UNIQUE,
        project TEXT NOT NULL,
        user_prompt TEXT,
        started_at TEXT NOT NULL,
        started_at_epoch INTEGER NOT NULL,
        completed_at TEXT,
        completed_at_epoch INTEGER,
        status TEXT CHECK(status IN ('active', 'completed', 'failed')) NOT NULL DEFAULT 'active'
      );

      CREATE INDEX IF NOT EXISTS idx_sdk_sessions_claude_id ON sdk_sessions(content_session_id);
      CREATE INDEX IF NOT EXISTS idx_sdk_sessions_sdk_id ON sdk_sessions(memory_session_id);
      CREATE INDEX IF NOT EXISTS idx_sdk_sessions_project ON sdk_sessions(project);
      CREATE INDEX IF NOT EXISTS idx_sdk_sessions_status ON sdk_sessions(status);
      CREATE INDEX IF NOT EXISTS idx_sdk_sessions_started ON sdk_sessions(started_at_epoch DESC);

      CREATE TABLE IF NOT EXISTS observations (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        memory_session_id TEXT NOT NULL,
        project TEXT NOT NULL,
        text TEXT NOT NULL,
        type TEXT NOT NULL,
        created_at TEXT NOT NULL,
        created_at_epoch INTEGER NOT NULL,
        FOREIGN KEY(memory_session_id) REFERENCES sdk_sessions(memory_session_id) ON DELETE CASCADE ON UPDATE CASCADE
      );

      CREATE INDEX IF NOT EXISTS idx_observations_sdk_session ON observations(memory_session_id);
      CREATE INDEX IF NOT EXISTS idx_observations_project ON observations(project);
      CREATE INDEX IF NOT EXISTS idx_observations_type ON observations(type);
      CREATE INDEX IF NOT EXISTS idx_observations_created ON observations(created_at_epoch DESC);

      CREATE TABLE IF NOT EXISTS session_summaries (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        memory_session_id TEXT UNIQUE NOT NULL,
        project TEXT NOT NULL,
        request TEXT,
        investigated TEXT,
        learned TEXT,
        completed TEXT,
        next_steps TEXT,
        files_read TEXT,
        files_edited TEXT,
        notes TEXT,
        created_at TEXT NOT NULL,
        created_at_epoch INTEGER NOT NULL,
        FOREIGN KEY(memory_session_id) REFERENCES sdk_sessions(memory_session_id) ON DELETE CASCADE ON UPDATE CASCADE
      );

      CREATE INDEX IF NOT EXISTS idx_session_summaries_sdk_session ON session_summaries(memory_session_id);
      CREATE INDEX IF NOT EXISTS idx_session_summaries_project ON session_summaries(project);
      CREATE INDEX IF NOT EXISTS idx_session_summaries_created ON session_summaries(created_at_epoch DESC);
    `),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(4,new Date().toISOString())}ensureWorkerPortColumn(){this.db.query("PRAGMA table_info(sdk_sessions)").all().some(s=>s.name==="worker_port")||(this.db.run("ALTER TABLE sdk_sessions ADD COLUMN worker_port INTEGER"),_.debug("DB","Added worker_port column to sdk_sessions table")),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(5,new Date().toISOString())}ensurePromptTrackingColumns(){this.db.query("PRAGMA table_info(sdk_sessions)").all().some(a=>a.name==="prompt_counter")||(this.db.run("ALTER TABLE sdk_sessions ADD COLUMN prompt_counter INTEGER DEFAULT 0"),_.debug("DB","Added prompt_counter column to sdk_sessions table")),this.db.query("PRAGMA table_info(observations)").all().some(a=>a.name==="prompt_number")||(this.db.run("ALTER TABLE observations ADD COLUMN prompt_number INTEGER"),_.debug("DB","Added prompt_number column to observations table")),this.db.query("PRAGMA table_info(session_summaries)").all().some(a=>a.name==="prompt_number")||(this.db.run("ALTER TABLE session_summaries ADD COLUMN prompt_number INTEGER"),_.debug("DB","Added prompt_number column to session_summaries table")),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(6,new Date().toISOString())}removeSessionSummariesUniqueConstraint(){if(!this.db.query("PRAGMA index_list(session_summaries)").all().some(s=>s.unique===1)){this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(7,new Date().toISOString());return}_.debug("DB","Removing UNIQUE constraint from session_summaries.memory_session_id"),this.db.run("BEGIN TRANSACTION"),this.db.run("DROP TABLE IF EXISTS session_summaries_new"),this.db.run(`
      CREATE TABLE session_summaries_new (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        memory_session_id TEXT NOT NULL,
        project TEXT NOT NULL,
        request TEXT,
        investigated TEXT,
        learned TEXT,
        completed TEXT,
        next_steps TEXT,
        files_read TEXT,
        files_edited TEXT,
        notes TEXT,
        prompt_number INTEGER,
        created_at TEXT NOT NULL,
        created_at_epoch INTEGER NOT NULL,
        FOREIGN KEY(memory_session_id) REFERENCES sdk_sessions(memory_session_id) ON DELETE CASCADE
      )
    `),this.db.run(`
      INSERT INTO session_summaries_new
      SELECT id, memory_session_id, project, request, investigated, learned,
             completed, next_steps, files_read, files_edited, notes,
             prompt_number, created_at, created_at_epoch
      FROM session_summaries
    `),this.db.run("DROP TABLE session_summaries"),this.db.run("ALTER TABLE session_summaries_new RENAME TO session_summaries"),this.db.run(`
      CREATE INDEX idx_session_summaries_sdk_session ON session_summaries(memory_session_id);
      CREATE INDEX idx_session_summaries_project ON session_summaries(project);
      CREATE INDEX idx_session_summaries_created ON session_summaries(created_at_epoch DESC);
    `),this.db.run("COMMIT"),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(7,new Date().toISOString()),_.debug("DB","Successfully removed UNIQUE constraint from session_summaries.memory_session_id")}addObservationHierarchicalFields(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(8))return;if(this.db.query("PRAGMA table_info(observations)").all().some(n=>n.name==="title")){this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(8,new Date().toISOString());return}_.debug("DB","Adding hierarchical fields to observations table"),this.db.run(`
      ALTER TABLE observations ADD COLUMN title TEXT;
      ALTER TABLE observations ADD COLUMN subtitle TEXT;
      ALTER TABLE observations ADD COLUMN facts TEXT;
      ALTER TABLE observations ADD COLUMN narrative TEXT;
      ALTER TABLE observations ADD COLUMN concepts TEXT;
      ALTER TABLE observations ADD COLUMN files_read TEXT;
      ALTER TABLE observations ADD COLUMN files_modified TEXT;
    `),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(8,new Date().toISOString()),_.debug("DB","Successfully added hierarchical fields to observations table")}makeObservationsTextNullable(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(9))return;let s=this.db.query("PRAGMA table_info(observations)").all().find(n=>n.name==="text");if(!s||s.notnull===0){this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(9,new Date().toISOString());return}_.debug("DB","Making observations.text nullable"),this.db.run("BEGIN TRANSACTION"),this.db.run("DROP TABLE IF EXISTS observations_new"),this.db.run(`
      CREATE TABLE observations_new (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        memory_session_id TEXT NOT NULL,
        project TEXT NOT NULL,
        text TEXT,
        type TEXT NOT NULL,
        title TEXT,
        subtitle TEXT,
        facts TEXT,
        narrative TEXT,
        concepts TEXT,
        files_read TEXT,
        files_modified TEXT,
        prompt_number INTEGER,
        created_at TEXT NOT NULL,
        created_at_epoch INTEGER NOT NULL,
        FOREIGN KEY(memory_session_id) REFERENCES sdk_sessions(memory_session_id) ON DELETE CASCADE
      )
    `),this.db.run(`
      INSERT INTO observations_new
      SELECT id, memory_session_id, project, text, type, title, subtitle, facts,
             narrative, concepts, files_read, files_modified, prompt_number,
             created_at, created_at_epoch
      FROM observations
    `),this.db.run("DROP TABLE observations"),this.db.run("ALTER TABLE observations_new RENAME TO observations"),this.db.run(`
      CREATE INDEX idx_observations_sdk_session ON observations(memory_session_id);
      CREATE INDEX idx_observations_project ON observations(project);
      CREATE INDEX idx_observations_type ON observations(type);
      CREATE INDEX idx_observations_created ON observations(created_at_epoch DESC);
    `),this.db.run("COMMIT"),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(9,new Date().toISOString()),_.debug("DB","Successfully made observations.text nullable")}createUserPromptsTable(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(10))return;if(this.db.query("PRAGMA table_info(user_prompts)").all().length>0){this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(10,new Date().toISOString());return}_.debug("DB","Creating user_prompts table with FTS5 support"),this.db.run("BEGIN TRANSACTION"),this.db.run(`
      CREATE TABLE user_prompts (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        content_session_id TEXT NOT NULL,
        prompt_number INTEGER NOT NULL,
        prompt_text TEXT NOT NULL,
        created_at TEXT NOT NULL,
        created_at_epoch INTEGER NOT NULL,
        FOREIGN KEY(content_session_id) REFERENCES sdk_sessions(content_session_id) ON DELETE CASCADE
      );

      CREATE INDEX idx_user_prompts_claude_session ON user_prompts(content_session_id);
      CREATE INDEX idx_user_prompts_created ON user_prompts(created_at_epoch DESC);
      CREATE INDEX idx_user_prompts_prompt_number ON user_prompts(prompt_number);
      CREATE INDEX idx_user_prompts_lookup ON user_prompts(content_session_id, prompt_number);
    `);try{this.db.run(`
        CREATE VIRTUAL TABLE user_prompts_fts USING fts5(
          prompt_text,
          content='user_prompts',
          content_rowid='id'
        );
      `),this.db.run(`
        CREATE TRIGGER user_prompts_ai AFTER INSERT ON user_prompts BEGIN
          INSERT INTO user_prompts_fts(rowid, prompt_text)
          VALUES (new.id, new.prompt_text);
        END;

        CREATE TRIGGER user_prompts_ad AFTER DELETE ON user_prompts BEGIN
          INSERT INTO user_prompts_fts(user_prompts_fts, rowid, prompt_text)
          VALUES('delete', old.id, old.prompt_text);
        END;

        CREATE TRIGGER user_prompts_au AFTER UPDATE ON user_prompts BEGIN
          INSERT INTO user_prompts_fts(user_prompts_fts, rowid, prompt_text)
          VALUES('delete', old.id, old.prompt_text);
          INSERT INTO user_prompts_fts(rowid, prompt_text)
          VALUES (new.id, new.prompt_text);
        END;
      `)}catch(s){_.warn("DB","FTS5 not available \u2014 user_prompts_fts skipped (search uses ChromaDB)",{},s)}this.db.run("COMMIT"),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(10,new Date().toISOString()),_.debug("DB","Successfully created user_prompts table")}ensureDiscoveryTokensColumn(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(11))return;this.db.query("PRAGMA table_info(observations)").all().some(i=>i.name==="discovery_tokens")||(this.db.run("ALTER TABLE observations ADD COLUMN discovery_tokens INTEGER DEFAULT 0"),_.debug("DB","Added discovery_tokens column to observations table")),this.db.query("PRAGMA table_info(session_summaries)").all().some(i=>i.name==="discovery_tokens")||(this.db.run("ALTER TABLE session_summaries ADD COLUMN discovery_tokens INTEGER DEFAULT 0"),_.debug("DB","Added discovery_tokens column to session_summaries table")),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(11,new Date().toISOString())}createPendingMessagesTable(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(16))return;if(this.db.query("SELECT name FROM sqlite_master WHERE type='table' AND name='pending_messages'").all().length>0){this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(16,new Date().toISOString());return}_.debug("DB","Creating pending_messages table"),this.db.run(`
      CREATE TABLE pending_messages (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        session_db_id INTEGER NOT NULL,
        content_session_id TEXT NOT NULL,
        message_type TEXT NOT NULL CHECK(message_type IN ('observation', 'summarize')),
        tool_name TEXT,
        tool_input TEXT,
        tool_response TEXT,
        cwd TEXT,
        last_user_message TEXT,
        last_assistant_message TEXT,
        prompt_number INTEGER,
        status TEXT NOT NULL DEFAULT 'pending' CHECK(status IN ('pending', 'processing', 'processed', 'failed')),
        retry_count INTEGER NOT NULL DEFAULT 0,
        created_at_epoch INTEGER NOT NULL,
        started_processing_at_epoch INTEGER,
        completed_at_epoch INTEGER,
        FOREIGN KEY (session_db_id) REFERENCES sdk_sessions(id) ON DELETE CASCADE
      )
    `),this.db.run("CREATE INDEX IF NOT EXISTS idx_pending_messages_session ON pending_messages(session_db_id)"),this.db.run("CREATE INDEX IF NOT EXISTS idx_pending_messages_status ON pending_messages(status)"),this.db.run("CREATE INDEX IF NOT EXISTS idx_pending_messages_claude_session ON pending_messages(content_session_id)"),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(16,new Date().toISOString()),_.debug("DB","pending_messages table created successfully")}renameSessionIdColumns(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(17))return;_.debug("DB","Checking session ID columns for semantic clarity rename");let t=0,s=(n,o,i)=>{let a=this.db.query(`PRAGMA table_info(${n})`).all(),c=a.some(m=>m.name===o);return a.some(m=>m.name===i)?!1:c?(this.db.run(`ALTER TABLE ${n} RENAME COLUMN ${o} TO ${i}`),_.debug("DB",`Renamed ${n}.${o} to ${i}`),!0):(_.warn("DB",`Column ${o} not found in ${n}, skipping rename`),!1)};s("sdk_sessions","claude_session_id","content_session_id")&&t++,s("sdk_sessions","sdk_session_id","memory_session_id")&&t++,s("pending_messages","claude_session_id","content_session_id")&&t++,s("observations","sdk_session_id","memory_session_id")&&t++,s("session_summaries","sdk_session_id","memory_session_id")&&t++,s("user_prompts","claude_session_id","content_session_id")&&t++,this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(17,new Date().toISOString()),t>0?_.debug("DB",`Successfully renamed ${t} session ID columns`):_.debug("DB","No session ID column renames needed (already up to date)")}repairSessionIdColumnRename(){this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(19)||this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(19,new Date().toISOString())}addFailedAtEpochColumn(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(20))return;this.db.query("PRAGMA table_info(pending_messages)").all().some(n=>n.name==="failed_at_epoch")||(this.db.run("ALTER TABLE pending_messages ADD COLUMN failed_at_epoch INTEGER"),_.debug("DB","Added failed_at_epoch column to pending_messages table")),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(20,new Date().toISOString())}addOnUpdateCascadeToForeignKeys(){if(!this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(21)){_.debug("DB","Adding ON UPDATE CASCADE to FK constraints on observations and session_summaries"),this.db.run("PRAGMA foreign_keys = OFF"),this.db.run("BEGIN TRANSACTION");try{this.db.run("DROP TRIGGER IF EXISTS observations_ai"),this.db.run("DROP TRIGGER IF EXISTS observations_ad"),this.db.run("DROP TRIGGER IF EXISTS observations_au"),this.db.run("DROP TABLE IF EXISTS observations_new"),this.db.run(`
        CREATE TABLE observations_new (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          memory_session_id TEXT NOT NULL,
          project TEXT NOT NULL,
          text TEXT,
          type TEXT NOT NULL,
          title TEXT,
          subtitle TEXT,
          facts TEXT,
          narrative TEXT,
          concepts TEXT,
          files_read TEXT,
          files_modified TEXT,
          prompt_number INTEGER,
          discovery_tokens INTEGER DEFAULT 0,
          created_at TEXT NOT NULL,
          created_at_epoch INTEGER NOT NULL,
          FOREIGN KEY(memory_session_id) REFERENCES sdk_sessions(memory_session_id) ON DELETE CASCADE ON UPDATE CASCADE
        )
      `),this.db.run(`
        INSERT INTO observations_new
        SELECT id, memory_session_id, project, text, type, title, subtitle, facts,
               narrative, concepts, files_read, files_modified, prompt_number,
               discovery_tokens, created_at, created_at_epoch
        FROM observations
      `),this.db.run("DROP TABLE observations"),this.db.run("ALTER TABLE observations_new RENAME TO observations"),this.db.run(`
        CREATE INDEX idx_observations_sdk_session ON observations(memory_session_id);
        CREATE INDEX idx_observations_project ON observations(project);
        CREATE INDEX idx_observations_type ON observations(type);
        CREATE INDEX idx_observations_created ON observations(created_at_epoch DESC);
      `),this.db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='observations_fts'").all().length>0&&this.db.run(`
          CREATE TRIGGER IF NOT EXISTS observations_ai AFTER INSERT ON observations BEGIN
            INSERT INTO observations_fts(rowid, title, subtitle, narrative, text, facts, concepts)
            VALUES (new.id, new.title, new.subtitle, new.narrative, new.text, new.facts, new.concepts);
          END;

          CREATE TRIGGER IF NOT EXISTS observations_ad AFTER DELETE ON observations BEGIN
            INSERT INTO observations_fts(observations_fts, rowid, title, subtitle, narrative, text, facts, concepts)
            VALUES('delete', old.id, old.title, old.subtitle, old.narrative, old.text, old.facts, old.concepts);
          END;

          CREATE TRIGGER IF NOT EXISTS observations_au AFTER UPDATE ON observations BEGIN
            INSERT INTO observations_fts(observations_fts, rowid, title, subtitle, narrative, text, facts, concepts)
            VALUES('delete', old.id, old.title, old.subtitle, old.narrative, old.text, old.facts, old.concepts);
            INSERT INTO observations_fts(rowid, title, subtitle, narrative, text, facts, concepts)
            VALUES (new.id, new.title, new.subtitle, new.narrative, new.text, new.facts, new.concepts);
          END;
        `),this.db.run("DROP TABLE IF EXISTS session_summaries_new"),this.db.run(`
        CREATE TABLE session_summaries_new (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          memory_session_id TEXT NOT NULL,
          project TEXT NOT NULL,
          request TEXT,
          investigated TEXT,
          learned TEXT,
          completed TEXT,
          next_steps TEXT,
          files_read TEXT,
          files_edited TEXT,
          notes TEXT,
          prompt_number INTEGER,
          discovery_tokens INTEGER DEFAULT 0,
          created_at TEXT NOT NULL,
          created_at_epoch INTEGER NOT NULL,
          FOREIGN KEY(memory_session_id) REFERENCES sdk_sessions(memory_session_id) ON DELETE CASCADE ON UPDATE CASCADE
        )
      `),this.db.run(`
        INSERT INTO session_summaries_new
        SELECT id, memory_session_id, project, request, investigated, learned,
               completed, next_steps, files_read, files_edited, notes,
               prompt_number, discovery_tokens, created_at, created_at_epoch
        FROM session_summaries
      `),this.db.run("DROP TRIGGER IF EXISTS session_summaries_ai"),this.db.run("DROP TRIGGER IF EXISTS session_summaries_ad"),this.db.run("DROP TRIGGER IF EXISTS session_summaries_au"),this.db.run("DROP TABLE session_summaries"),this.db.run("ALTER TABLE session_summaries_new RENAME TO session_summaries"),this.db.run(`
        CREATE INDEX idx_session_summaries_sdk_session ON session_summaries(memory_session_id);
        CREATE INDEX idx_session_summaries_project ON session_summaries(project);
        CREATE INDEX idx_session_summaries_created ON session_summaries(created_at_epoch DESC);
      `),this.db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='session_summaries_fts'").all().length>0&&this.db.run(`
          CREATE TRIGGER IF NOT EXISTS session_summaries_ai AFTER INSERT ON session_summaries BEGIN
            INSERT INTO session_summaries_fts(rowid, request, investigated, learned, completed, next_steps, notes)
            VALUES (new.id, new.request, new.investigated, new.learned, new.completed, new.next_steps, new.notes);
          END;

          CREATE TRIGGER IF NOT EXISTS session_summaries_ad AFTER DELETE ON session_summaries BEGIN
            INSERT INTO session_summaries_fts(session_summaries_fts, rowid, request, investigated, learned, completed, next_steps, notes)
            VALUES('delete', old.id, old.request, old.investigated, old.learned, old.completed, old.next_steps, old.notes);
          END;

          CREATE TRIGGER IF NOT EXISTS session_summaries_au AFTER UPDATE ON session_summaries BEGIN
            INSERT INTO session_summaries_fts(session_summaries_fts, rowid, request, investigated, learned, completed, next_steps, notes)
            VALUES('delete', old.id, old.request, old.investigated, old.learned, old.completed, old.next_steps, old.notes);
            INSERT INTO session_summaries_fts(rowid, request, investigated, learned, completed, next_steps, notes)
            VALUES (new.id, new.request, new.investigated, new.learned, new.completed, new.next_steps, new.notes);
          END;
        `),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(21,new Date().toISOString()),this.db.run("COMMIT"),this.db.run("PRAGMA foreign_keys = ON"),_.debug("DB","Successfully added ON UPDATE CASCADE to FK constraints")}catch(t){throw this.db.run("ROLLBACK"),this.db.run("PRAGMA foreign_keys = ON"),t}}}addObservationContentHashColumn(){if(this.db.query("PRAGMA table_info(observations)").all().some(s=>s.name==="content_hash")){this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(22,new Date().toISOString());return}this.db.run("ALTER TABLE observations ADD COLUMN content_hash TEXT"),this.db.run("UPDATE observations SET content_hash = substr(hex(randomblob(8)), 1, 16) WHERE content_hash IS NULL"),this.db.run("CREATE INDEX IF NOT EXISTS idx_observations_content_hash ON observations(content_hash, created_at_epoch)"),_.debug("DB","Added content_hash column to observations table with backfill and index"),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(22,new Date().toISOString())}addSessionCustomTitleColumn(){if(this.db.prepare("SELECT version FROM schema_versions WHERE version = ?").get(23))return;this.db.query("PRAGMA table_info(sdk_sessions)").all().some(n=>n.name==="custom_title")||(this.db.run("ALTER TABLE sdk_sessions ADD COLUMN custom_title TEXT"),_.debug("DB","Added custom_title column to sdk_sessions table")),this.db.prepare("INSERT OR IGNORE INTO schema_versions (version, applied_at) VALUES (?, ?)").run(23,new Date().toISOString())}updateMemorySessionId(e,t){this.db.prepare(`
      UPDATE sdk_sessions
      SET memory_session_id = ?
      WHERE id = ?
    `).run(t,e)}ensureMemorySessionIdRegistered(e,t){let s=this.db.prepare(`
      SELECT id, memory_session_id FROM sdk_sessions WHERE id = ?
    `).get(e);if(!s)throw new Error(`Session ${e} not found in sdk_sessions`);s.memory_session_id!==t&&(this.db.prepare(`
        UPDATE sdk_sessions SET memory_session_id = ? WHERE id = ?
      `).run(t,e),_.info("DB","Registered memory_session_id before storage (FK fix)",{sessionDbId:e,oldId:s.memory_session_id,newId:t}))}getRecentSummaries(e,t=10){return this.db.prepare(`
      SELECT
        request, investigated, learned, completed, next_steps,
        files_read, files_edited, notes, prompt_number, created_at
      FROM session_summaries
      WHERE project = ?
      ORDER BY created_at_epoch DESC
      LIMIT ?
    `).all(e,t)}getRecentSummariesWithSessionInfo(e,t=3){return this.db.prepare(`
      SELECT
        memory_session_id, request, learned, completed, next_steps,
        prompt_number, created_at
      FROM session_summaries
      WHERE project = ?
      ORDER BY created_at_epoch DESC
      LIMIT ?
    `).all(e,t)}getRecentObservations(e,t=20){return this.db.prepare(`
      SELECT type, text, prompt_number, created_at
      FROM observations
      WHERE project = ?
      ORDER BY created_at_epoch DESC
      LIMIT ?
    `).all(e,t)}getAllRecentObservations(e=100){return this.db.prepare(`
      SELECT id, type, title, subtitle, text, project, prompt_number, created_at, created_at_epoch
      FROM observations
      ORDER BY created_at_epoch DESC
      LIMIT ?
    `).all(e)}getAllRecentSummaries(e=50){return this.db.prepare(`
      SELECT id, request, investigated, learned, completed, next_steps,
             files_read, files_edited, notes, project, prompt_number,
             created_at, created_at_epoch
      FROM session_summaries
      ORDER BY created_at_epoch DESC
      LIMIT ?
    `).all(e)}getAllRecentUserPrompts(e=100){return this.db.prepare(`
      SELECT
        up.id,
        up.content_session_id,
        s.project,
        up.prompt_number,
        up.prompt_text,
        up.created_at,
        up.created_at_epoch
      FROM user_prompts up
      LEFT JOIN sdk_sessions s ON up.content_session_id = s.content_session_id
      ORDER BY up.created_at_epoch DESC
      LIMIT ?
    `).all(e)}getAllProjects(){return this.db.prepare(`
      SELECT DISTINCT project
      FROM sdk_sessions
      WHERE project IS NOT NULL AND project != ''
      ORDER BY project ASC
    `).all().map(s=>s.project)}getLatestUserPrompt(e){return this.db.prepare(`
      SELECT
        up.*,
        s.memory_session_id,
        s.project
      FROM user_prompts up
      JOIN sdk_sessions s ON up.content_session_id = s.content_session_id
      WHERE up.content_session_id = ?
      ORDER BY up.created_at_epoch DESC
      LIMIT 1
    `).get(e)}getRecentSessionsWithStatus(e,t=3){return this.db.prepare(`
      SELECT * FROM (
        SELECT
          s.memory_session_id,
          s.status,
          s.started_at,
          s.started_at_epoch,
          s.user_prompt,
          CASE WHEN sum.memory_session_id IS NOT NULL THEN 1 ELSE 0 END as has_summary
        FROM sdk_sessions s
        LEFT JOIN session_summaries sum ON s.memory_session_id = sum.memory_session_id
        WHERE s.project = ? AND s.memory_session_id IS NOT NULL
        GROUP BY s.memory_session_id
        ORDER BY s.started_at_epoch DESC
        LIMIT ?
      )
      ORDER BY started_at_epoch ASC
    `).all(e,t)}getObservationsForSession(e){return this.db.prepare(`
      SELECT title, subtitle, type, prompt_number
      FROM observations
      WHERE memory_session_id = ?
      ORDER BY created_at_epoch ASC
    `).all(e)}getObservationById(e){return this.db.prepare(`
      SELECT *
      FROM observations
      WHERE id = ?
    `).get(e)||null}getObservationsByIds(e,t={}){if(e.length===0)return[];let{orderBy:s="date_desc",limit:n,project:o,type:i,concepts:a,files:c}=t,p=s==="date_asc"?"ASC":"DESC",m=n?`LIMIT ${n}`:"",u=e.map(()=>"?").join(","),T=[...e],E=[];if(o&&(E.push("project = ?"),T.push(o)),i)if(Array.isArray(i)){let l=i.map(()=>"?").join(",");E.push(`type IN (${l})`),T.push(...i)}else E.push("type = ?"),T.push(i);if(a){let l=Array.isArray(a)?a:[a],g=l.map(()=>"EXISTS (SELECT 1 FROM json_each(concepts) WHERE value = ?)");T.push(...l),E.push(`(${g.join(" OR ")})`)}if(c){let l=Array.isArray(c)?c:[c],g=l.map(()=>"(EXISTS (SELECT 1 FROM json_each(files_read) WHERE value LIKE ?) OR EXISTS (SELECT 1 FROM json_each(files_modified) WHERE value LIKE ?))");l.forEach(b=>{T.push(`%${b}%`,`%${b}%`)}),E.push(`(${g.join(" OR ")})`)}let f=E.length>0?`WHERE id IN (${u}) AND ${E.join(" AND ")}`:`WHERE id IN (${u})`;return this.db.prepare(`
      SELECT *
      FROM observations
      ${f}
      ORDER BY created_at_epoch ${p}
      ${m}
    `).all(...T)}getSummaryForSession(e){return this.db.prepare(`
      SELECT
        request, investigated, learned, completed, next_steps,
        files_read, files_edited, notes, prompt_number, created_at,
        created_at_epoch
      FROM session_summaries
      WHERE memory_session_id = ?
      ORDER BY created_at_epoch DESC
      LIMIT 1
    `).get(e)||null}getFilesForSession(e){let s=this.db.prepare(`
      SELECT files_read, files_modified
      FROM observations
      WHERE memory_session_id = ?
    `).all(e),n=new Set,o=new Set;for(let i of s){if(i.files_read){let a=JSON.parse(i.files_read);Array.isArray(a)&&a.forEach(c=>n.add(c))}if(i.files_modified){let a=JSON.parse(i.files_modified);Array.isArray(a)&&a.forEach(c=>o.add(c))}}return{filesRead:Array.from(n),filesModified:Array.from(o)}}getSessionById(e){return this.db.prepare(`
      SELECT id, content_session_id, memory_session_id, project, user_prompt, custom_title
      FROM sdk_sessions
      WHERE id = ?
      LIMIT 1
    `).get(e)||null}getSdkSessionsBySessionIds(e){if(e.length===0)return[];let t=e.map(()=>"?").join(",");return this.db.prepare(`
      SELECT id, content_session_id, memory_session_id, project, user_prompt, custom_title,
             started_at, started_at_epoch, completed_at, completed_at_epoch, status
      FROM sdk_sessions
      WHERE memory_session_id IN (${t})
      ORDER BY started_at_epoch DESC
    `).all(...e)}getPromptNumberFromUserPrompts(e){return this.db.prepare(`
      SELECT COUNT(*) as count FROM user_prompts WHERE content_session_id = ?
    `).get(e).count}createSDKSession(e,t,s,n){let o=new Date,i=o.getTime(),a=this.db.prepare(`
      SELECT id FROM sdk_sessions WHERE content_session_id = ?
    `).get(e);return a?(t&&this.db.prepare(`
          UPDATE sdk_sessions SET project = ?
          WHERE content_session_id = ? AND (project IS NULL OR project = '')
        `).run(t,e),n&&this.db.prepare(`
          UPDATE sdk_sessions SET custom_title = ?
          WHERE content_session_id = ? AND custom_title IS NULL
        `).run(n,e),a.id):(this.db.prepare(`
      INSERT INTO sdk_sessions
      (content_session_id, memory_session_id, project, user_prompt, custom_title, started_at, started_at_epoch, status)
      VALUES (?, NULL, ?, ?, ?, ?, ?, 'active')
    `).run(e,t,s,n||null,o.toISOString(),i),this.db.prepare("SELECT id FROM sdk_sessions WHERE content_session_id = ?").get(e).id)}saveUserPrompt(e,t,s){let n=new Date,o=n.getTime();return this.db.prepare(`
      INSERT INTO user_prompts
      (content_session_id, prompt_number, prompt_text, created_at, created_at_epoch)
      VALUES (?, ?, ?, ?, ?)
    `).run(e,t,s,n.toISOString(),o).lastInsertRowid}getUserPrompt(e,t){return this.db.prepare(`
      SELECT prompt_text
      FROM user_prompts
      WHERE content_session_id = ? AND prompt_number = ?
      LIMIT 1
    `).get(e,t)?.prompt_text??null}storeObservation(e,t,s,n,o=0,i){let a=i??Date.now(),c=new Date(a).toISOString(),p=w(e,s.title,s.narrative),m=$(this.db,p,a);if(m)return{id:m.id,createdAtEpoch:m.created_at_epoch};let T=this.db.prepare(`
      INSERT INTO observations
      (memory_session_id, project, type, title, subtitle, facts, narrative, concepts,
       files_read, files_modified, prompt_number, discovery_tokens, content_hash, created_at, created_at_epoch)
      VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
    `).run(e,t,s.type,s.title,s.subtitle,JSON.stringify(s.facts),s.narrative,JSON.stringify(s.concepts),JSON.stringify(s.files_read),JSON.stringify(s.files_modified),n||null,o,p,c,a);return{id:Number(T.lastInsertRowid),createdAtEpoch:a}}storeSummary(e,t,s,n,o=0,i){let a=i??Date.now(),c=new Date(a).toISOString(),m=this.db.prepare(`
      INSERT INTO session_summaries
      (memory_session_id, project, request, investigated, learned, completed,
       next_steps, notes, prompt_number, discovery_tokens, created_at, created_at_epoch)
      VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
    `).run(e,t,s.request,s.investigated,s.learned,s.completed,s.next_steps,s.notes,n||null,o,c,a);return{id:Number(m.lastInsertRowid),createdAtEpoch:a}}storeObservations(e,t,s,n,o,i=0,a){let c=a??Date.now(),p=new Date(c).toISOString();return this.db.transaction(()=>{let u=[],T=this.db.prepare(`
        INSERT INTO observations
        (memory_session_id, project, type, title, subtitle, facts, narrative, concepts,
         files_read, files_modified, prompt_number, discovery_tokens, content_hash, created_at, created_at_epoch)
        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
      `);for(let f of s){let h=w(e,f.title,f.narrative),l=$(this.db,h,c);if(l){u.push(l.id);continue}let g=T.run(e,t,f.type,f.title,f.subtitle,JSON.stringify(f.facts),f.narrative,JSON.stringify(f.concepts),JSON.stringify(f.files_read),JSON.stringify(f.files_modified),o||null,i,h,p,c);u.push(Number(g.lastInsertRowid))}let E=null;if(n){let h=this.db.prepare(`
          INSERT INTO session_summaries
          (memory_session_id, project, request, investigated, learned, completed,
           next_steps, notes, prompt_number, discovery_tokens, created_at, created_at_epoch)
          VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
        `).run(e,t,n.request,n.investigated,n.learned,n.completed,n.next_steps,n.notes,o||null,i,p,c);E=Number(h.lastInsertRowid)}return{observationIds:u,summaryId:E,createdAtEpoch:c}})()}storeObservationsAndMarkComplete(e,t,s,n,o,i,a,c=0,p){let m=p??Date.now(),u=new Date(m).toISOString();return this.db.transaction(()=>{let E=[],f=this.db.prepare(`
        INSERT INTO observations
        (memory_session_id, project, type, title, subtitle, facts, narrative, concepts,
         files_read, files_modified, prompt_number, discovery_tokens, content_hash, created_at, created_at_epoch)
        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
      `);for(let g of s){let b=w(e,g.title,g.narrative),O=$(this.db,b,m);if(O){E.push(O.id);continue}let lt=f.run(e,t,g.type,g.title,g.subtitle,JSON.stringify(g.facts),g.narrative,JSON.stringify(g.concepts),JSON.stringify(g.files_read),JSON.stringify(g.files_modified),a||null,c,b,u,m);E.push(Number(lt.lastInsertRowid))}let h;if(n){let b=this.db.prepare(`
          INSERT INTO session_summaries
          (memory_session_id, project, request, investigated, learned, completed,
           next_steps, notes, prompt_number, discovery_tokens, created_at, created_at_epoch)
          VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
        `).run(e,t,n.request,n.investigated,n.learned,n.completed,n.next_steps,n.notes,a||null,c,u,m);h=Number(b.lastInsertRowid)}return this.db.prepare(`
        UPDATE pending_messages
        SET
          status = 'processed',
          completed_at_epoch = ?,
          tool_input = NULL,
          tool_response = NULL
        WHERE id = ? AND status = 'processing'
      `).run(m,o),{observationIds:E,summaryId:h,createdAtEpoch:m}})()}getSessionSummariesByIds(e,t={}){if(e.length===0)return[];let{orderBy:s="date_desc",limit:n,project:o}=t,i=s==="date_asc"?"ASC":"DESC",a=n?`LIMIT ${n}`:"",c=e.map(()=>"?").join(","),p=[...e],m=o?`WHERE id IN (${c}) AND project = ?`:`WHERE id IN (${c})`;return o&&p.push(o),this.db.prepare(`
      SELECT * FROM session_summaries
      ${m}
      ORDER BY created_at_epoch ${i}
      ${a}
    `).all(...p)}getUserPromptsByIds(e,t={}){if(e.length===0)return[];let{orderBy:s="date_desc",limit:n,project:o}=t,i=s==="date_asc"?"ASC":"DESC",a=n?`LIMIT ${n}`:"",c=e.map(()=>"?").join(","),p=[...e],m=o?"AND s.project = ?":"";return o&&p.push(o),this.db.prepare(`
      SELECT
        up.*,
        s.project,
        s.memory_session_id
      FROM user_prompts up
      JOIN sdk_sessions s ON up.content_session_id = s.content_session_id
      WHERE up.id IN (${c}) ${m}
      ORDER BY up.created_at_epoch ${i}
      ${a}
    `).all(...p)}getTimelineAroundTimestamp(e,t=10,s=10,n){return this.getTimelineAroundObservation(null,e,t,s,n)}getTimelineAroundObservation(e,t,s=10,n=10,o){let i=o?"AND project = ?":"",a=o?[o]:[],c,p;if(e!==null){let l=`
        SELECT id, created_at_epoch
        FROM observations
        WHERE id <= ? ${i}
        ORDER BY id DESC
        LIMIT ?
      `,g=`
        SELECT id, created_at_epoch
        FROM observations
        WHERE id >= ? ${i}
        ORDER BY id ASC
        LIMIT ?
      `;try{let b=this.db.prepare(l).all(e,...a,s+1),O=this.db.prepare(g).all(e,...a,n+1);if(b.length===0&&O.length===0)return{observations:[],sessions:[],prompts:[]};c=b.length>0?b[b.length-1].created_at_epoch:t,p=O.length>0?O[O.length-1].created_at_epoch:t}catch(b){return _.error("DB","Error getting boundary observations",void 0,{error:b,project:o}),{observations:[],sessions:[],prompts:[]}}}else{let l=`
        SELECT created_at_epoch
        FROM observations
        WHERE created_at_epoch <= ? ${i}
        ORDER BY created_at_epoch DESC
        LIMIT ?
      `,g=`
        SELECT created_at_epoch
        FROM observations
        WHERE created_at_epoch >= ? ${i}
        ORDER BY created_at_epoch ASC
        LIMIT ?
      `;try{let b=this.db.prepare(l).all(t,...a,s),O=this.db.prepare(g).all(t,...a,n+1);if(b.length===0&&O.length===0)return{observations:[],sessions:[],prompts:[]};c=b.length>0?b[b.length-1].created_at_epoch:t,p=O.length>0?O[O.length-1].created_at_epoch:t}catch(b){return _.error("DB","Error getting boundary timestamps",void 0,{error:b,project:o}),{observations:[],sessions:[],prompts:[]}}}let m=`
      SELECT *
      FROM observations
      WHERE created_at_epoch >= ? AND created_at_epoch <= ? ${i}
      ORDER BY created_at_epoch ASC
    `,u=`
      SELECT *
      FROM session_summaries
      WHERE created_at_epoch >= ? AND created_at_epoch <= ? ${i}
      ORDER BY created_at_epoch ASC
    `,T=`
      SELECT up.*, s.project, s.memory_session_id
      FROM user_prompts up
      JOIN sdk_sessions s ON up.content_session_id = s.content_session_id
      WHERE up.created_at_epoch >= ? AND up.created_at_epoch <= ? ${i.replace("project","s.project")}
      ORDER BY up.created_at_epoch ASC
    `,E=this.db.prepare(m).all(c,p,...a),f=this.db.prepare(u).all(c,p,...a),h=this.db.prepare(T).all(c,p,...a);return{observations:E,sessions:f.map(l=>({id:l.id,memory_session_id:l.memory_session_id,project:l.project,request:l.request,completed:l.completed,next_steps:l.next_steps,created_at:l.created_at,created_at_epoch:l.created_at_epoch})),prompts:h.map(l=>({id:l.id,content_session_id:l.content_session_id,prompt_number:l.prompt_number,prompt_text:l.prompt_text,project:l.project,created_at:l.created_at,created_at_epoch:l.created_at_epoch}))}}getPromptById(e){return this.db.prepare(`
      SELECT
        p.id,
        p.content_session_id,
        p.prompt_number,
        p.prompt_text,
        s.project,
        p.created_at,
        p.created_at_epoch
      FROM user_prompts p
      LEFT JOIN sdk_sessions s ON p.content_session_id = s.content_session_id
      WHERE p.id = ?
      LIMIT 1
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        p.created_at,
        p.created_at_epoch
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        learned_summary,
        status,
        created_at,
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        prompt_number, discovery_tokens, created_at, created_at_epoch
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    SELECT
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