remove id from fs_dentry

SPEC.md

@@ -215,19 +215,17 @@ Maps names to inodes (directory entries).
 
 ```sql
 CREATE TABLE fs_dentry (
-  id INTEGER PRIMARY KEY AUTOINCREMENT,
   name TEXT NOT NULL,
   parent_ino INTEGER NOT NULL,
   ino INTEGER NOT NULL,
-  UNIQUE(parent_ino, name)
+  PRIMARY KEY(parent_ino, name)
 )
 
 CREATE INDEX idx_fs_dentry_parent ON fs_dentry(parent_ino, name)
 ```
 
 **Fields:**
 
-- `id` - Internal entry ID
 - `name` - Basename (filename or directory name)
 - `parent_ino` - Parent directory inode number
 - `ino` - Inode this entry points to

sdk/python/agentfs_sdk/filesystem.py

@@ -125,11 +125,10 @@ async def _initialize(self) -> None:
             );
 
             CREATE TABLE IF NOT EXISTS fs_dentry (
-                id INTEGER PRIMARY KEY AUTOINCREMENT,
                 name TEXT NOT NULL,
                 parent_ino INTEGER NOT NULL,
                 ino INTEGER NOT NULL,
-                UNIQUE(parent_ino, name)
+                PRIMARY KEY(parent_ino, name)
             );
 
             CREATE INDEX IF NOT EXISTS idx_fs_dentry_parent

sdk/rust/src/filesystem/agentfs.rs

@@ -484,11 +484,10 @@ impl AgentFS {
         // Create directory entry table
         conn.execute(
             "CREATE TABLE IF NOT EXISTS fs_dentry (
-                id INTEGER PRIMARY KEY AUTOINCREMENT,
                 name TEXT NOT NULL,
                 parent_ino INTEGER NOT NULL,
                 ino INTEGER NOT NULL,
-                UNIQUE(parent_ino, name)
+                PRIMARY KEY(parent_ino, name)
             )",
             (),
         )

sdk/typescript/src/filesystem/agentfs.ts

@@ -255,11 +255,10 @@ export class AgentFS implements FileSystem {
 
     await this.db.exec(`
       CREATE TABLE IF NOT EXISTS fs_dentry (
-        id INTEGER PRIMARY KEY AUTOINCREMENT,
         name TEXT NOT NULL,
         parent_ino INTEGER NOT NULL,
         ino INTEGER NOT NULL,
-        UNIQUE(parent_ino, name)
+        PRIMARY KEY(parent_ino, name)
       )
     `);
 

sdk/typescript/src/integrations/cloudflare/agentfs.ts

@@ -337,11 +337,10 @@ export class AgentFS implements FileSystem {
 
     this.storage.sql.exec(`
       CREATE TABLE IF NOT EXISTS fs_dentry (
-        id INTEGER PRIMARY KEY AUTOINCREMENT,
         name TEXT NOT NULL,
         parent_ino INTEGER NOT NULL,
         ino INTEGER NOT NULL,
-        UNIQUE(parent_ino, name)
+        PRIMARY KEY(parent_ino, name)
       )
     `);