Files

769 lines
27 KiB
Python

import os
import json
import sqlite3
import uuid
from typing import Any, Dict, List, Optional
from .config import DB_PATH
def _conn() -> sqlite3.Connection:
os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
conn = sqlite3.connect(DB_PATH, timeout=120.0)
conn.row_factory = sqlite3.Row
conn.execute("PRAGMA journal_mode=WAL")
conn.execute("PRAGMA busy_timeout=120000")
return conn
def init_db() -> None:
with _conn() as conn:
conn.execute("""
CREATE TABLE IF NOT EXISTS agent_config (
agent_id TEXT PRIMARY KEY,
display_name TEXT NOT NULL,
enabled INTEGER NOT NULL DEFAULT 1,
schedule_config TEXT NOT NULL DEFAULT '{}',
custom_config TEXT NOT NULL DEFAULT '{}',
created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
updated_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
)
""")
conn.execute("""
CREATE TABLE IF NOT EXISTS agent_tasks (
id TEXT PRIMARY KEY,
agent_id TEXT NOT NULL,
task_type TEXT NOT NULL,
status TEXT NOT NULL DEFAULT 'pending',
input_data TEXT NOT NULL DEFAULT '{}',
result_data TEXT,
requires_approval INTEGER NOT NULL DEFAULT 0,
approved_at TEXT,
approved_via TEXT,
created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
completed_at TEXT
)
""")
conn.execute("""
CREATE INDEX IF NOT EXISTS idx_tasks_agent
ON agent_tasks(agent_id, created_at DESC)
""")
conn.execute("""
CREATE TABLE IF NOT EXISTS agent_logs (
id INTEGER PRIMARY KEY AUTOINCREMENT,
agent_id TEXT NOT NULL,
task_id TEXT,
level TEXT NOT NULL DEFAULT 'info',
message TEXT NOT NULL,
created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
)
""")
conn.execute("""
CREATE TABLE IF NOT EXISTS telegram_state (
callback_id TEXT PRIMARY KEY,
task_id TEXT NOT NULL,
agent_id TEXT NOT NULL,
action TEXT,
responded INTEGER NOT NULL DEFAULT 0,
created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
)
""")
conn.execute("""
CREATE TABLE IF NOT EXISTS conversation_messages (
id INTEGER PRIMARY KEY AUTOINCREMENT,
chat_id TEXT NOT NULL,
role TEXT NOT NULL,
content TEXT NOT NULL,
model TEXT,
tokens_input INTEGER DEFAULT 0,
tokens_output INTEGER DEFAULT 0,
cache_read INTEGER DEFAULT 0,
cache_write INTEGER DEFAULT 0,
latency_ms INTEGER DEFAULT 0,
created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
)
""")
conn.execute("""
CREATE INDEX IF NOT EXISTS idx_conv_chat
ON conversation_messages(chat_id, created_at DESC)
""")
conn.execute("""
CREATE TABLE IF NOT EXISTS youtube_research_jobs (
id INTEGER PRIMARY KEY AUTOINCREMENT,
status TEXT NOT NULL DEFAULT 'running',
countries TEXT NOT NULL DEFAULT '[]',
trends_collected INTEGER NOT NULL DEFAULT 0,
error TEXT,
started_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
completed_at TEXT
)
""")
conn.execute("""
CREATE TABLE IF NOT EXISTS lotto_signals (
id INTEGER PRIMARY KEY AUTOINCREMENT,
triggered_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
source TEXT NOT NULL,
metric TEXT NOT NULL,
value REAL NOT NULL,
baseline_mu REAL,
baseline_sigma REAL,
z_score REAL,
fire_level TEXT NOT NULL,
notified_at TEXT,
payload TEXT
)
""")
conn.execute("""
CREATE INDEX IF NOT EXISTS idx_ls_triggered
ON lotto_signals(triggered_at DESC)
""")
conn.execute("""
CREATE INDEX IF NOT EXISTS idx_ls_fire
ON lotto_signals(fire_level, notified_at)
""")
conn.execute("""
CREATE TABLE IF NOT EXISTS lotto_baselines (
metric TEXT PRIMARY KEY,
window_values TEXT NOT NULL DEFAULT '[]',
mu REAL NOT NULL DEFAULT 0.0,
sigma REAL NOT NULL DEFAULT 0.0,
last_pushed_draw_no INTEGER,
updated_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
)
""")
# Seed default agent configs
for agent_id, name in [
("stock", "주식 트레이더"),
("music", "음악 프로듀서"),
("blog", "블로그 마케터"),
("realestate", "청약 애널리스트"),
("lotto", "로또 큐레이터"),
("youtube", "YouTube 리서치"),
]:
conn.execute(
"INSERT OR IGNORE INTO agent_config(agent_id, display_name) VALUES(?,?)",
(agent_id, name),
)
# --- agent_config CRUD ---
def get_all_agents() -> List[Dict[str, Any]]:
with _conn() as conn:
rows = conn.execute("SELECT * FROM agent_config ORDER BY agent_id").fetchall()
return [_config_to_dict(r) for r in rows]
def get_agent_config(agent_id: str) -> Optional[Dict[str, Any]]:
with _conn() as conn:
r = conn.execute("SELECT * FROM agent_config WHERE agent_id=?", (agent_id,)).fetchone()
return _config_to_dict(r) if r else None
def update_agent_config(agent_id: str, **kwargs) -> None:
sets, vals = [], []
for k in ("enabled", "schedule_config", "custom_config"):
if k in kwargs and kwargs[k] is not None:
if k in ("schedule_config", "custom_config"):
sets.append(f"{k}=?")
vals.append(json.dumps(kwargs[k]))
else:
sets.append(f"{k}=?")
vals.append(kwargs[k])
if not sets:
return
sets.append("updated_at=strftime('%Y-%m-%dT%H:%M:%fZ','now')")
vals.append(agent_id)
with _conn() as conn:
conn.execute(f"UPDATE agent_config SET {','.join(sets)} WHERE agent_id=?", vals)
def _config_to_dict(r) -> Dict[str, Any]:
return {
"agent_id": r["agent_id"],
"display_name": r["display_name"],
"enabled": bool(r["enabled"]),
"schedule_config": json.loads(r["schedule_config"]),
"custom_config": json.loads(r["custom_config"]),
"created_at": r["created_at"],
"updated_at": r["updated_at"],
}
# --- agent_tasks CRUD ---
def create_task(agent_id: str, task_type: str, input_data: dict, requires_approval: bool = False) -> str:
task_id = str(uuid.uuid4())
status = "pending" if requires_approval else "working"
with _conn() as conn:
conn.execute(
"INSERT INTO agent_tasks(id,agent_id,task_type,status,input_data,requires_approval) VALUES(?,?,?,?,?,?)",
(task_id, agent_id, task_type, status, json.dumps(input_data), int(requires_approval)),
)
return task_id
def update_task_status(task_id: str, status: str, result_data: dict = None) -> None:
with _conn() as conn:
if result_data is not None:
conn.execute(
"UPDATE agent_tasks SET status=?, result_data=?, completed_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id=?",
(status, json.dumps(result_data), task_id),
)
else:
conn.execute("UPDATE agent_tasks SET status=? WHERE id=?", (status, task_id))
def approve_task(task_id: str, via: str = "web") -> None:
with _conn() as conn:
conn.execute(
"UPDATE agent_tasks SET status='approved', approved_at=strftime('%Y-%m-%dT%H:%M:%fZ','now'), approved_via=? WHERE id=?",
(via, task_id),
)
def reject_task(task_id: str) -> None:
with _conn() as conn:
conn.execute(
"UPDATE agent_tasks SET status='rejected', completed_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id=?",
(task_id,),
)
def get_task(task_id: str) -> Optional[Dict[str, Any]]:
with _conn() as conn:
r = conn.execute("SELECT * FROM agent_tasks WHERE id=?", (task_id,)).fetchone()
return _task_to_dict(r) if r else None
def get_agent_tasks(
agent_id: str,
limit: int = 20,
task_type: Optional[str] = None,
days: Optional[int] = None,
) -> List[Dict[str, Any]]:
sql = "SELECT * FROM agent_tasks WHERE agent_id=?"
params: List[Any] = [agent_id]
if task_type is not None:
sql += " AND task_type=?"
params.append(task_type)
if days is not None and days > 0:
sql += " AND created_at >= datetime('now', ?)"
params.append(f"-{int(days)} days")
sql += " ORDER BY created_at DESC LIMIT ?"
params.append(limit)
with _conn() as conn:
rows = conn.execute(sql, params).fetchall()
return [_task_to_dict(r) for r in rows]
def get_pending_approvals() -> List[Dict[str, Any]]:
with _conn() as conn:
rows = conn.execute(
"SELECT * FROM agent_tasks WHERE status='pending' AND requires_approval=1 ORDER BY created_at DESC"
).fetchall()
return [_task_to_dict(r) for r in rows]
def _task_to_dict(r) -> Dict[str, Any]:
return {
"id": r["id"],
"agent_id": r["agent_id"],
"task_type": r["task_type"],
"status": r["status"],
"input_data": json.loads(r["input_data"]) if r["input_data"] else {},
"result_data": json.loads(r["result_data"]) if r["result_data"] else None,
"requires_approval": bool(r["requires_approval"]),
"approved_at": r["approved_at"],
"approved_via": r["approved_via"],
"created_at": r["created_at"],
"completed_at": r["completed_at"],
}
# --- agent_logs ---
def add_log(agent_id: str, message: str, level: str = "info", task_id: str = None) -> None:
with _conn() as conn:
conn.execute(
"INSERT INTO agent_logs(agent_id,task_id,level,message) VALUES(?,?,?,?)",
(agent_id, task_id, level, message),
)
def get_logs(agent_id: str, limit: int = 50) -> List[Dict[str, Any]]:
with _conn() as conn:
rows = conn.execute(
"SELECT * FROM agent_logs WHERE agent_id=? ORDER BY created_at DESC LIMIT ?",
(agent_id, limit),
).fetchall()
return [
{
"id": r["id"],
"agent_id": r["agent_id"],
"task_id": r["task_id"],
"level": r["level"],
"message": r["message"],
"created_at": r["created_at"],
}
for r in rows
]
# --- telegram_state ---
def save_telegram_callback(callback_id: str, task_id: str, agent_id: str) -> None:
with _conn() as conn:
conn.execute(
"INSERT OR REPLACE INTO telegram_state(callback_id,task_id,agent_id) VALUES(?,?,?)",
(callback_id, task_id, agent_id),
)
def get_telegram_callback(callback_id: str) -> Optional[Dict[str, Any]]:
with _conn() as conn:
r = conn.execute(
"SELECT * FROM telegram_state WHERE callback_id=? AND responded=0",
(callback_id,),
).fetchone()
if not r:
return None
return {
"callback_id": r["callback_id"],
"task_id": r["task_id"],
"agent_id": r["agent_id"],
"responded": bool(r["responded"]),
}
def mark_telegram_responded(callback_id: str, action: str) -> None:
with _conn() as conn:
conn.execute(
"UPDATE telegram_state SET responded=1, action=? WHERE callback_id=?",
(action, callback_id),
)
def get_token_usage_stats(agent_id: str, days: int = 1) -> dict:
"""지정 에이전트의 최근 N일 토큰 사용량 집계.
agent_tasks 테이블의 result_data JSON에서 tokens.total을 합산.
반환: {"total_tokens": int, "task_count": int, "by_day": [{"date": "YYYY-MM-DD", "tokens": int}]}
"""
with _conn() as conn:
rows = conn.execute(
"""
SELECT completed_at, result_data
FROM agent_tasks
WHERE agent_id = ?
AND status = 'succeeded'
AND completed_at IS NOT NULL
AND completed_at >= strftime('%Y-%m-%dT%H:%M:%fZ','now', ?)
""",
(agent_id, f"-{int(days)} days"),
).fetchall()
total_tokens = 0
task_count = 0
by_day_map: Dict[str, int] = {}
for r in rows:
result_data = r["result_data"]
if not result_data:
continue
try:
parsed = json.loads(result_data)
except Exception:
continue
tokens = parsed.get("tokens") if isinstance(parsed, dict) else None
total = 0
if isinstance(tokens, dict):
total = int(tokens.get("total", 0) or 0)
if total <= 0:
continue
total_tokens += total
task_count += 1
completed_at = r["completed_at"] or ""
day = completed_at[:10] if completed_at else "unknown"
by_day_map[day] = by_day_map.get(day, 0) + total
by_day = [
{"date": d, "tokens": t}
for d, t in sorted(by_day_map.items())
]
return {
"total_tokens": total_tokens,
"task_count": task_count,
"by_day": by_day,
}
def save_conversation_message(
chat_id: str,
role: str,
content: str,
model: Optional[str] = None,
tokens_input: int = 0,
tokens_output: int = 0,
cache_read: int = 0,
cache_write: int = 0,
latency_ms: int = 0,
) -> None:
with _conn() as conn:
conn.execute(
"""
INSERT INTO conversation_messages
(chat_id, role, content, model, tokens_input, tokens_output,
cache_read, cache_write, latency_ms)
VALUES (?,?,?,?,?,?,?,?,?)
""",
(str(chat_id), role, content, model, tokens_input, tokens_output,
cache_read, cache_write, latency_ms),
)
def get_conversation_history(chat_id: str, limit: int = 20) -> List[Dict[str, Any]]:
"""최근 N개를 시간순(오래된 → 최신)으로 반환."""
with _conn() as conn:
rows = conn.execute(
"""
SELECT role, content FROM conversation_messages
WHERE chat_id=? ORDER BY id DESC LIMIT ?
""",
(str(chat_id), limit),
).fetchall()
return [{"role": r["role"], "content": r["content"]} for r in reversed(rows)]
def count_recent_user_messages(chat_id: str, seconds: int = 60) -> int:
with _conn() as conn:
r = conn.execute(
"""
SELECT COUNT(*) AS c FROM conversation_messages
WHERE chat_id=? AND role='user'
AND created_at >= strftime('%Y-%m-%dT%H:%M:%fZ','now', ?)
""",
(str(chat_id), f"-{int(seconds)} seconds"),
).fetchone()
return r["c"] if r else 0
def get_conversation_stats(days: int = 7) -> Dict[str, Any]:
with _conn() as conn:
rows = conn.execute(
"""
SELECT chat_id,
COUNT(*) AS msg_count,
SUM(tokens_input) AS in_tokens,
SUM(tokens_output) AS out_tokens,
SUM(cache_read) AS cache_read,
SUM(cache_write) AS cache_write,
AVG(latency_ms) AS avg_latency
FROM conversation_messages
WHERE role='assistant'
AND created_at >= strftime('%Y-%m-%dT%H:%M:%fZ','now', ?)
GROUP BY chat_id
""",
(f"-{int(days)} days",),
).fetchall()
by_chat = []
tot_in = tot_out = tot_r = tot_w = tot_msgs = 0
for r in rows:
ci = int(r["in_tokens"] or 0)
co = int(r["out_tokens"] or 0)
cr = int(r["cache_read"] or 0)
cw = int(r["cache_write"] or 0)
mc = int(r["msg_count"] or 0)
hit_rate = (cr / (cr + cw)) if (cr + cw) > 0 else 0.0
by_chat.append({
"chat_id": r["chat_id"],
"message_count": mc,
"tokens_input": ci,
"tokens_output": co,
"cache_read": cr,
"cache_write": cw,
"cache_hit_rate": round(hit_rate, 3),
"avg_latency_ms": round(float(r["avg_latency"] or 0), 1),
})
tot_in += ci; tot_out += co; tot_r += cr; tot_w += cw; tot_msgs += mc
overall_hit = (tot_r / (tot_r + tot_w)) if (tot_r + tot_w) > 0 else 0.0
return {
"days": days,
"total_messages": tot_msgs,
"tokens_input": tot_in,
"tokens_output": tot_out,
"cache_read": tot_r,
"cache_write": tot_w,
"cache_hit_rate": round(overall_hit, 3),
"by_chat": by_chat,
}
def get_activity_feed(limit: int = 50, offset: int = 0) -> dict:
with _conn() as conn:
total_row = conn.execute("""
SELECT (SELECT COUNT(*) FROM agent_tasks) + (SELECT COUNT(*) FROM agent_logs) AS total
""").fetchone()
total = total_row["total"] if total_row else 0
rows = conn.execute("""
SELECT 'task' AS type, agent_id, id AS task_id, task_type,
status, NULL AS level,
COALESCE(
json_extract(result_data, '$.summary'),
task_type
) AS message,
created_at, completed_at,
result_data
FROM agent_tasks
UNION ALL
SELECT 'log' AS type, agent_id, task_id, NULL AS task_type,
NULL AS status, level,
message,
created_at, NULL AS completed_at,
NULL AS result_data
FROM agent_logs
ORDER BY created_at DESC
LIMIT ? OFFSET ?
""", (limit, offset)).fetchall()
items = []
for r in rows:
item = {
"type": r["type"],
"agent_id": r["agent_id"],
"task_id": r["task_id"],
"message": r["message"],
"created_at": r["created_at"],
}
if r["type"] == "task":
item["task_type"] = r["task_type"]
item["status"] = r["status"]
item["completed_at"] = r["completed_at"]
if r["created_at"] and r["completed_at"]:
try:
from datetime import datetime
start = datetime.fromisoformat(r["created_at"].replace("Z", "+00:00"))
end = datetime.fromisoformat(r["completed_at"].replace("Z", "+00:00"))
item["duration_seconds"] = round((end - start).total_seconds())
except Exception:
item["duration_seconds"] = None
else:
item["duration_seconds"] = None
result_data = json.loads(r["result_data"]) if r["result_data"] else None
if result_data and "telegram_sent" in result_data:
item["telegram_sent"] = result_data["telegram_sent"]
else:
item["level"] = r["level"]
items.append(item)
return {"items": items, "total": total}
# ── youtube_research_jobs CRUD ────────────────────────────────────────────────
def add_youtube_research_job(countries: list) -> int:
with _conn() as conn:
conn.execute(
"INSERT INTO youtube_research_jobs (countries) VALUES (?)",
(json.dumps(countries),),
)
return conn.execute("SELECT last_insert_rowid()").fetchone()[0]
def update_youtube_research_job(
job_id: int, status: str, trends_collected: int, error: Optional[str] = None
) -> None:
with _conn() as conn:
conn.execute(
"""UPDATE youtube_research_jobs
SET status=?, trends_collected=?, error=?,
completed_at=strftime('%Y-%m-%dT%H:%M:%fZ','now')
WHERE id=?""",
(status, trends_collected, error, job_id),
)
def get_latest_youtube_research_job() -> Optional[Dict[str, Any]]:
with _conn() as conn:
row = conn.execute(
"SELECT * FROM youtube_research_jobs ORDER BY id DESC LIMIT 1"
).fetchone()
if not row:
return None
return {
"id": row["id"],
"status": row["status"],
"countries": json.loads(row["countries"]),
"trends_collected": row["trends_collected"],
"error": row["error"],
"started_at": row["started_at"],
"completed_at": row["completed_at"],
}
# --- lotto_signals / lotto_baselines CRUD ---
def insert_lotto_signal(
source: str,
metric: str,
value: float,
baseline_mu: Optional[float],
baseline_sigma: Optional[float],
z_score: Optional[float],
fire_level: str,
payload: Optional[Dict[str, Any]] = None,
) -> int:
with _conn() as conn:
cur = conn.execute(
"""
INSERT INTO lotto_signals
(source, metric, value, baseline_mu, baseline_sigma, z_score, fire_level, payload)
VALUES (?, ?, ?, ?, ?, ?, ?, ?)
""",
(
source, metric, value,
baseline_mu, baseline_sigma, z_score, fire_level,
json.dumps(payload or {}, ensure_ascii=False),
),
)
return cur.lastrowid
def mark_signal_notified(signal_id: int) -> None:
with _conn() as conn:
conn.execute(
"UPDATE lotto_signals SET notified_at = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?",
(signal_id,),
)
def get_recent_lotto_signals(hours: int = 24, min_fire: str = "normal") -> List[Dict[str, Any]]:
"""지난 N시간 발화 시그널. min_fire='normal'이면 normal+urgent."""
levels = ("urgent",) if min_fire == "urgent" else ("normal", "urgent")
placeholders = ",".join("?" * len(levels))
with _conn() as conn:
rows = conn.execute(
f"""
SELECT * FROM lotto_signals
WHERE triggered_at >= datetime('now', ?)
AND fire_level IN ({placeholders})
ORDER BY triggered_at DESC
""",
(f"-{int(hours)} hours", *levels),
).fetchall()
return [dict(r) for r in rows]
def get_signals_history(days: int = 7) -> List[Dict[str, Any]]:
"""차트/이력 페이지용 — 모든 fire_level 포함."""
with _conn() as conn:
rows = conn.execute(
"""
SELECT * FROM lotto_signals
WHERE triggered_at >= datetime('now', ?)
ORDER BY triggered_at DESC
""",
(f"-{int(days)} days",),
).fetchall()
return [dict(r) for r in rows]
def get_recent_urgent_count(hours: int = 24) -> int:
with _conn() as conn:
row = conn.execute(
"""
SELECT COUNT(*) AS c FROM lotto_signals
WHERE triggered_at >= datetime('now', ?)
AND fire_level = 'urgent'
AND notified_at IS NOT NULL
""",
(f"-{int(hours)} hours",),
).fetchone()
return int(row["c"]) if row else 0
def get_last_signal_notification(metric: str, fire_level: str, hours: int) -> Optional[str]:
"""같은 metric+fire_level이 hours 내에 알림 발송된 마지막 시각. throttle용."""
with _conn() as conn:
row = conn.execute(
"""
SELECT notified_at FROM lotto_signals
WHERE metric = ?
AND fire_level = ?
AND notified_at IS NOT NULL
AND notified_at >= datetime('now', ?)
ORDER BY notified_at DESC LIMIT 1
""",
(metric, fire_level, f"-{int(hours)} hours"),
).fetchone()
return row["notified_at"] if row else None
def get_baseline(metric: str) -> Optional[Dict[str, Any]]:
with _conn() as conn:
row = conn.execute(
"SELECT * FROM lotto_baselines WHERE metric = ?",
(metric,),
).fetchone()
if not row:
return None
d = dict(row)
d["window_values"] = json.loads(d["window_values"])
return d
def upsert_baseline(
metric: str,
window_values: List[float],
mu: float,
sigma: float,
last_pushed_draw_no: Optional[int],
) -> None:
with _conn() as conn:
conn.execute(
"""
INSERT INTO lotto_baselines
(metric, window_values, mu, sigma, last_pushed_draw_no, updated_at)
VALUES (?, ?, ?, ?, ?, strftime('%Y-%m-%dT%H:%M:%fZ','now'))
ON CONFLICT(metric) DO UPDATE SET
window_values = excluded.window_values,
mu = excluded.mu,
sigma = excluded.sigma,
last_pushed_draw_no = excluded.last_pushed_draw_no,
updated_at = excluded.updated_at
""",
(
metric,
json.dumps(window_values),
mu, sigma, last_pushed_draw_no,
),
)
def get_all_baselines() -> List[Dict[str, Any]]:
with _conn() as conn:
rows = conn.execute("SELECT * FROM lotto_baselines ORDER BY metric").fetchall()
out = []
for r in rows:
d = dict(r)
d["window_values"] = json.loads(d["window_values"])
out.append(d)
return out
def get_tasks_by_agent_date_kind(agent_id: str, date_iso: str, task_type: str) -> List[Dict[str, Any]]:
"""같은 (agent, date, task_type)으로 이미 생성된 task 조회. 멱등 guard."""
with _conn() as conn:
rows = conn.execute(
"""
SELECT * FROM agent_tasks
WHERE agent_id = ? AND task_type = ?
AND substr(created_at, 1, 10) = ?
ORDER BY created_at DESC
""",
(agent_id, task_type, date_iso),
).fetchall()
return [_task_to_dict(r) for r in rows]