fix(cli): accept -f/--format and --json on every command

[ankitranjan7]

-f/--format and --json were registered on roughly half the CLI's commands. An agent that learns --json on webcmd plugin list hits error: unknown option '--json' on webcmd plugin install, and has no way to predict which side of the line a command falls on. In a recent eval this cost repeated wrong guesses in 4 of 12 scenarios.

What changed

1. ensureOutputFormatOptions(program) walks the finished Commander tree and registers -f, --format <fmt> plus --json on every leaf that lacks them. Namespace commands (adapter, plugin, …) are skipped — they only print help — and external-CLI passthrough is skipped so its argv still reaches the wrapped binary.
2. Action commands now render a structured result when a format is requested: plugin install/uninstall/update/create, profile create/rename/use, adapter path/override/reset, daemon stop/restart, external install/register, browser init, and the site write leaves (note add, endpoint set/stale, field-map add, fixture put, sample add). Shape is a small { ok, action, … } envelope, consistent across similar commands. Without a flag the human output is byte-identical.
3. browser tabs/bind/close/snapshot/run route their result through the shared renderer with json as the default format, so -f yaml works and today's JSON bytes are unchanged. browser run gains -f/--format alongside the --json it already had.
4. configureCompletionCommandSurface and the plugin install/uninstall/update surfaces gained the flag directly, so hosted mode inherits the same grammar as local — hosted help and structural-error parity tests cover this.
5. webcmd skills add/update/remove keep their existing --json envelope and now also honour -f json.

Before / After

Before, on origin/main:

$ webcmd adapter path -f json hackernews/ask
error: unknown option '-f'

$ webcmd plugin install --json openfda
error: unknown option '--json'
help: valid flags for `webcmd plugin install`: --all

$ webcmd profile create demo --json
error: unknown option '--json'

After:

$ webcmd adapter path -f json hackernews/ask
{
  "ok": true,
  "command": "hackernews/ask",
  "path": "/Users/ankitranjan/.webcmd/plugins/hackernews/ask.js"
}

$ webcmd adapter path hackernews/ask
/Users/ankitranjan/.webcmd/plugins/hackernews/ask.js

$ webcmd plugin install --json openfda
Error: Invalid plugin source: "openfda"
Supported formats:
  github:user/repo

Tests

src/cli-format-contract.test.ts walks the whole Commander tree and asserts every non-namespace, non-passthrough command exposes -f, --format and --json, so a command added later cannot regress the contract. A second case asserts adapter path prints the bare path by default and the { ok, command, path } envelope under --json. src/site-memory/commands.test.ts adds equivalent default-silent / structured-under---json coverage for three write leaves.

npm run typecheck clean. npx vitest run --project unit: 2707 passed, 2 failed — both in src/browser/run/playwright-client-build.test.ts, which cannot read node_modules/playwright-core through this worktree's symlink; the same file passes in a normal checkout and is untouched by this change.

🤖 Generated with Claude Code

[github-actions]

🟠 Maintainer review suggested — low confidence

The automated review could not reach a fully supported conclusion.

Limitations

• The automated review returned an invalid structured result.

This review is advisory and does not block merging.