Add dual-prefix AI command

app/commands/core.py

@@ -82,7 +82,8 @@ def shared_access_check() -> CommandCheck:
             return CheckResult.deny("Permission store is not initialized")
         if store.is_allowed(ctx.actor_id, ctx.command.name):
             return CheckResult.allow()
-        return CheckResult.deny(f"No access to {ctx.command.prefix}{ctx.command.name}")
+        required_prefix = ctx.command.expected_prefix(ctx.is_owner)
+        return CheckResult.deny(f"No access to {required_prefix}{ctx.command.name}")
 
     return CommandCheck("shared_access", _check, "Allow owner or ACL-granted users")
 
@@ -185,7 +186,8 @@ class CommandDefinition:
     name: str
     description: str
     handler: CommandHandler
-    prefix: str = "."
+    owner_prefix: str = "."
+    guest_prefix: str | None = None
     aliases: tuple[str, ...] = ()
     usage: str | None = None
     category: str = "general"
@@ -193,11 +195,21 @@ class CommandDefinition:
 
     @property
     def is_shared(self) -> bool:
-        return self.prefix == ".."
+        return self.guest_prefix is not None
 
     @property
     def display_name(self) -> str:
-        return f"{self.prefix}{self.name}"
+        if self.guest_prefix is None:
+            return f"{self.owner_prefix}{self.name}"
+        return f"{self.owner_prefix}{self.name} / {self.guest_prefix}{self.name}"
+
+    def expected_prefix(self, is_owner: bool) -> str:
+        if self.guest_prefix is None:
+            return self.owner_prefix
+        return self.owner_prefix if is_owner else self.guest_prefix
+
+    def accepts_prefix(self, prefix: str, *, is_owner: bool) -> bool:
+        return prefix == self.expected_prefix(is_owner)
 
     def help_line(self, ctx: CommandContext | None = None) -> str:
         usage = self.usage or self.display_name
@@ -231,15 +243,16 @@ class CommandBuilder:
         self.aliases = [normalize_command_name(alias) for alias in aliases]
         self.usage = usage
         self.category = category
-        self.prefix = "."
+        self.owner_prefix = "."
+        self.guest_prefix: str | None = None
         self.checks: list[CommandCheck] = []
 
     def private(self) -> "CommandBuilder":
-        self.prefix = "."
+        self.guest_prefix = None
         return self
 
     def shared(self) -> "CommandBuilder":
-        self.prefix = ".."
+        self.guest_prefix = ".."
         return self
 
     def alias(self, *aliases: str) -> "CommandBuilder":
@@ -264,7 +277,7 @@ class CommandBuilder:
 
     def build(self, handler: CommandHandler) -> CommandDefinition:
         default_checks: list[CommandCheck] = []
-        if self.prefix == "..":
+        if self.guest_prefix is not None:
             default_checks.append(shared_access_check())
         else:
             default_checks.append(owner_only_check())
@@ -273,7 +286,8 @@ class CommandBuilder:
             name=self.name,
             description=self.description,
             handler=handler,
-            prefix=self.prefix,
+            owner_prefix=self.owner_prefix,
+            guest_prefix=self.guest_prefix,
             aliases=tuple(self.aliases),
             usage=self.usage,
             category=self.category,