feat(wallet-cli): add mm daemon list for callable-surface discovery

[sirtimid]

What

mm daemon call <Controller>:<method> can dispatch any registered messenger action, but a consumer had no way to see what's callable — and the surface grows silently as controllers are wired. This adds mm daemon list to enumerate it.

• listActions RPC handler in the daemon, backed by the live messenger's getRegisteredActionTypes() (landed in feat(messenger): add getRegisteredActionTypes accessor #9271), so the list can never drift from what call actually accepts — no hand-kept catalog to rot.
• mm daemon list command renders an indented, counted list on a TTY, and a bare, sorted, newline-delimited list when piped (so it pipes cleanly into grep/fzf).
• README usage section refreshed: documents list, frames the surface as evolving (not a stability contract), links out to each controller's TypeDoc/README for exhaustive detail, and drops the stale @deprecated AccountsController:listAccounts example (fixed to KeyringController:getState).

Testing

• New list.test.ts and a listActions handler test in daemon-entry.test.ts; package stays at 100% coverage.
• build, test, lint, and changelog:validate all pass.

🤖 Generated with Claude Code

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Note

Low Risk
CLI-only discovery and error-message refactors; no changes to wallet auth, key handling, or messenger dispatch semantics beyond a read-only introspection RPC.

Overview
Adds mm daemon list so users can see which messenger actions the running wallet daemon accepts via daemon call, without maintaining a static catalog.

The daemon exposes a new listActions JSON-RPC handler that returns messenger.getRegisteredActionTypes(), keeping discovery aligned with what call can dispatch. The CLI sorts actions lexicographically: on a TTY it prints a counted, indented list with usage hints; when piped it emits a bare newline-delimited list for grep/fzf.

mm daemon call now shares centralized socket and JSON-RPC error handling via makeDaemonConnectionError, formatJsonRpcError, and isStringArray in daemon/utils, including clearer messages for ECONNRESET and permission errors. README and changelog document list and refresh call examples.

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