feat: add default permission mode + rename accept→edit

- Add "default" permission mode: no flags passed to CC, uses its own
  built-in default (asks about everything). Now the system default.
- Rename "accept" alias to "edit" (acceptEdits) for clarity
- Remove "skip" alias (duplicate of "bypass")
- Update all help text, error messages, tests, and LLM prompts

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

orchestrator/agent.py

@@ -53,10 +53,10 @@ Bot command prefix: {prefix}
 - Any other command the user would type manually
 
 Available bot commands (pass verbatim to run_command):
-  {prefix}new <dir> [msg] [--perm bypass|accept|plan]  — create session
+  {prefix}new <dir> [msg] [--perm default|edit|plan|bypass]  — create session
   {prefix}close [n|conv_id]   — close session
   {prefix}switch <n>          — switch active session
-  {prefix}perm <mode> [conv_id] — permission mode: bypass (default), accept, plan
+  {prefix}perm <mode> [conv_id] — permission mode: default, edit, plan, bypass
   {prefix}direct              — direct mode (bypass LLM for CC messages)
   {prefix}smart               — smart mode (LLM routing, default)
   {prefix}status              — list sessions

orchestrator/tools.py

@@ -720,7 +720,7 @@ class RunCommandInput(BaseModel):
     command: str = Field(
         ...,
         description=(
-            "A bot slash command to execute (e.g. '/perm accept', '/close 1', '/switch 2'). "
+            "A bot slash command to execute (e.g. '//perm edit', '//close 1', '//switch 2'). "
             "This runs bot control commands — NOT shell commands on the host machine. "
             "Use run_shell for host shell commands (git, ls, etc.)."
         ),
@@ -732,7 +732,7 @@ class RunCommandTool(BaseTool):
     description: str = (
         "Execute a PhoneWork bot slash command on behalf of the user. "
         "Use this to control sessions, switch modes, change permissions, etc. "
-        "Examples: '/perm accept', '/close 1', '/switch 2', '/direct', '/smart', '/status'. "
+        "Examples: '/perm edit', '/close 1', '/switch 2', '/direct', '/smart', '/status'. "
         "Do NOT use this for shell commands — use run_shell for those."
     )
     args_schema: Type[BaseModel] = RunCommandInput