Fix claude completion for optional-valued flags (#1288)

`--resume`, `--from-pr` and `--worktree` take an *optional* value in the
Claude Code CLI (`-r, --resume [value]` in `claude --help`), but the
extern declared them as `string` flags. A bare `claude --resume`, which
is how you open the interactive session picker, therefore fails to
parse:

```
Error: nu::parser::missing_flag_param
  x Missing flag argument.
```

Nushell flags can't have an optional value, so this declares the three
as switches. An extern passes its arguments to the external command in
the order they were typed, so a value after the switch still arrives
where the CLI expects it:

```
claude --resume              => [--resume]
claude -r abc -p hi          => [--resume][abc][--print][hi]
claude -w feature            => [--worktree][feature]
claude --from-pr 123         => [--from-pr][123]
claude --remote-control desk => [--remote-control][desk]
```

(argv as received by a stub `claude` on `PATH`.) The one thing lost is
the `--resume=<id>` spelling, which Nushell reads as a boolean on a
switch; `--resume <id>` works.

Also:

- adds `--remote-control`, which was missing and takes an optional name
in the same way
- refreshes the value lists against Claude Code 2.1.302: effort gains
`xhigh` and `max`; permission-mode gains `auto` and `manual` and drops
`default`, which the CLI no longer lists as a choice; models moves to
the current aliases (`fable`, `opus`, `sonnet`, `haiku`) and model IDs

Tested on Nushell 0.116.1: `toolkit.nu check pr` on the file passes, and
`commandline complete` returns the new lists for `--effort`,
`--permission-mode` and `--model`.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: 0x4D5352

custom-completions/claude/claude-completions.nu

@@ -14,15 +14,15 @@ def "nu-complete claude input-format" [] {
 }
 
 def "nu-complete claude permission-mode" [] {
-    [acceptEdits bypassPermissions default dontAsk plan]
+    [acceptEdits auto bypassPermissions manual dontAsk plan]
 }
 
 def "nu-complete claude models" [] {
-    [sonnet opus haiku claude-sonnet-4-6]
+    [fable opus sonnet haiku claude-fable-5-1 claude-opus-5-5 claude-sonnet-5-5 claude-haiku-5-5]
 }
 
 def "nu-complete claude effort" [] {
-    [low medium high]
+    [low medium high xhigh max]
 }
 
 def "nu-complete claude scope" [] {
@@ -41,6 +41,12 @@ def "nu-complete claude install-channel" [] {
     [stable latest]
 }
 
+# --resume, --from-pr, --worktree and --remote-control take an optional value,
+# which a Nushell flag cannot express, so they are declared as switches. A value
+# typed after one is passed to claude in place, as a positional:
+# `claude --resume` opens the session picker and `claude --resume <id>` resumes.
+# The `--flag=value` spelling is not available for these flags.
+
 # Claude Code - starts an interactive session by default, use -p/--print for non-interactive output
 export extern claude [
     --debug(-d)                                             # Enable debug mode
@@ -66,7 +72,7 @@ export extern claude [
     --append-system-prompt: string                          # Append system prompt
     --permission-mode: string@"nu-complete claude permission-mode"  # Permission mode
     --continue(-c)                                          # Continue last session
-    --resume(-r): string                                    # Resume session by ID
+    --resume(-r)                                            # Resume a session (optional ID or search term)
     --fork-session                                          # Fork session
     --no-session-persistence                                # Disable session persistence
     --model: string@"nu-complete claude models"             # Model to use
@@ -84,9 +90,10 @@ export extern claude [
     --disable-slash-commands                                 # Disable slash commands
     --chrome                                                # Enable Chrome
     --no-chrome                                             # Disable Chrome
-    --from-pr: string                                       # From PR
+    --from-pr                                               # Resume a session linked to a PR (optional number or URL)
     --file: path                                            # Input file
-    --worktree(-w): string                                  # Git worktree
+    --worktree(-w)                                          # Create a git worktree (optional name)
+    --remote-control                                        # Start with Remote Control enabled (optional name)
     --tmux                                                  # Tmux mode
     --effort: string@"nu-complete claude effort"            # Effort level
     --version(-v)                                           # Show version