feat: chat improvements, file viewer, usage fixes, and agent filesystem awareness

server/web/routes.py

@@ -909,17 +909,6 @@ async def get_usage(
     params: list = []
     n = 1
 
-    # Exclude email handler agents
-    handler_ids_rows = await pool.fetch(
-        "SELECT agent_id FROM email_accounts WHERE agent_id IS NOT NULL"
-    )
-    handler_ids = [str(r["agent_id"]) for r in handler_ids_rows]
-    if handler_ids:
-        placeholders = ", ".join(f"${n + i}" for i in range(len(handler_ids)))
-        clauses.append(f"ar.agent_id NOT IN ({placeholders})")
-        params.extend(handler_ids)
-        n += len(handler_ids)
-
     if since_dt:
         clauses.append(f"ar.started_at >= ${n}"); params.append(since_dt); n += 1
     if end:
@@ -1039,6 +1028,20 @@ async def get_usage(
     }
 
 
+# ── Usage: clear cost data ────────────────────────────────────────────────────
+
+@router.delete("/usage/cost")
+async def clear_cost_data(request: Request):
+    """Delete all agent_runs and null out conversation cost_usd. Admin only."""
+    _require_admin(request)
+    from ..database import get_pool as _gp
+    pool = await _gp()
+    async with pool.acquire() as conn:
+        await conn.execute("DELETE FROM agent_runs")
+        await conn.execute("UPDATE conversations SET cost_usd = NULL WHERE cost_usd IS NOT NULL")
+    return {"ok": True}
+
+
 # ── Inbox triggers ────────────────────────────────────────────────────────────
 
 class InboxTriggerIn(BaseModel):
@@ -2857,6 +2860,38 @@ async def download_my_file(request: Request, path: str):
     )
 
 
+_FB_TEXT_EXTS = {
+    ".md", ".txt", ".json", ".xml", ".yaml", ".yml", ".csv",
+    ".html", ".htm", ".css", ".js", ".ts", ".jsx", ".tsx",
+    ".py", ".sh", ".bash", ".zsh", ".log", ".sql", ".toml",
+    ".ini", ".conf", ".cfg", ".env", ".gitignore", ".dockerfile",
+    ".rst", ".tex", ".diff", ".patch", ".nfo", ".tsv",
+}
+
+
+@router.get("/my/files/view")
+async def view_my_file(request: Request, path: str):
+    user = _require_auth(request)
+    from ..users import get_user_folder
+    base = await get_user_folder(user.id)
+    if not base:
+        raise HTTPException(status_code=404, detail="No files folder configured")
+    target = _resolve_user_path(base, path)
+    if not _os.path.isfile(target):
+        raise HTTPException(status_code=404, detail="File not found")
+    ext = _os.path.splitext(target)[1].lower()
+    if ext not in _FB_TEXT_EXTS:
+        raise HTTPException(status_code=415, detail="File type not supported for viewing")
+    size = _os.path.getsize(target)
+    _MAX_VIEW = 512 * 1024  # 512 KB
+    try:
+        with open(target, "r", encoding="utf-8", errors="replace") as fh:
+            content = fh.read(_MAX_VIEW)
+    except OSError as exc:
+        raise HTTPException(status_code=500, detail=str(exc))
+    return {"content": content, "size": size, "truncated": size > _MAX_VIEW}
+
+
 @router.get("/my/files/download-zip")
 async def download_my_zip(request: Request, path: str = ""):
     user = _require_auth(request)