feat(prompts): add create and rename flows for CLI and TUI

[brushax]

Summary

This PR completes prompt management as a first-class workflow instead of leaving it half in CLI and half missing in TUI.

It adds:

• prompt rename for both CLI and TUI
• prompt creation flow in TUI
• explicit prompt naming on CLI create
• prompt list refresh action in TUI for external changes

What changed

CLI

• Added cc-switch prompts rename <id> [name]
• rename falls back to an interactive single-line prompt when name is omitted
• Extended cc-switch prompts create to cc-switch prompts create [name]
• create now lets users set the prompt name up front instead of only generating a timestamp name

TUI

• Added c on the Prompts page to create a prompt
• Added n on the Prompts page to rename a prompt
• Added r on the Prompts page to reload prompt data so prompts created outside the current TUI session become visible without restarting
• Reused the existing single-line TextInput overlay for prompt naming and the existing multiline editor for prompt content

Shared backend

• Added PromptService::create_prompt(...)
• Added PromptService::rename_prompt(...)
• Added shared prompt id generation so CLI and TUI create flows behave consistently

Why this design

The original prompt UX had three gaps:

• TUI exposed prompt viewing/editing/activation but not creation
• CLI-created prompts were easy to miss in TUI because there was no prompt-page refresh action
• prompt names were effectively timestamp-generated on create, which made the workflow awkward if the user already knew the intended name

This change keeps the implementation aligned with existing repo patterns:

• name entry uses the current single-line overlay
• content editing uses the current editor
• persistence goes through shared service methods instead of duplicating logic in CLI and TUI

Validation

Ran with cargo +stable in src-tauri/.

Passed:

• cargo +stable fmt --all
• cargo +stable test --test prompt_commands -- --nocapture
• cargo +stable test prompts_ --lib -- --nocapture
• cargo +stable test submit_prompt_create_persists_prompt_and_refreshes_selection --lib -- --nocapture

Notes

The local environment still has a flaky install path for the repo's pinned Rust 1.91.1 toolchain, so validation was run with cargo +stable.

[Copilot]

Pull request overview

This PR completes prompt management workflows across both the CLI and the TUI by adding create + rename flows, a TUI refresh action, and shared backend service methods so both frontends behave consistently.

Changes:

• Added prompt creation (TUI overlay + editor submit) and prompt renaming (CLI + TUI) workflows.
• Introduced shared backend helpers: PromptService::create_prompt, PromptService::rename_prompt, and shared prompt ID generation.
• Updated TUI key hints/help text, CLI command surface (create [name], new rename <id> [name]), and added/extended tests.

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src-tauri/tests/prompt_commands.rs	Adds tests covering prompt create (explicit name) and rename behavior.
src-tauri/src/services/prompt.rs	Adds shared prompt ID generation plus create_prompt/rename_prompt service methods.
src-tauri/src/cli/tui/ui/prompts.rs	Updates Prompts page key legend to include create/refresh/rename.
src-tauri/src/cli/tui/runtime_actions/prompts.rs	Adds runtime action handler for prompt rename.
src-tauri/src/cli/tui/runtime_actions/mod.rs	Wires Action::PromptRename into the runtime action dispatcher.
src-tauri/src/cli/tui/runtime_actions/editor.rs	Adds editor submit handling for prompt creation and a corresponding test.
src-tauri/src/cli/tui/app/types.rs	Extends TextSubmit to support prompt create-name and rename flows.
src-tauri/src/cli/tui/app/tests.rs	Adds TUI key/overlay/action unit tests for create/rename/refresh behavior.
src-tauri/src/cli/tui/app/overlay_handlers/dialogs.rs	Handles prompt create-name and rename submits via the text input overlay.
src-tauri/src/cli/tui/app/editor_state.rs	Adds EditorSubmit::PromptCreate.
src-tauri/src/cli/tui/app/content_entities.rs	Adds prompts-page keybindings: c create, r reload, n rename.
src-tauri/src/cli/tui/app/content_config.rs	Adds helper to open the create-name text input overlay with a default name.
src-tauri/src/cli/tui/app/app_state.rs	Adds new Action::PromptRename { id, name }.
src-tauri/src/cli/mod.rs	Updates CLI command description to include create/rename.
src-tauri/src/cli/i18n/texts/toasts.rs	Adds new toasts for prompt created/renamed.
src-tauri/src/cli/i18n/texts/providers.rs	Adds a TUI key label for “rename”.
src-tauri/src/cli/i18n/texts/core.rs	Updates TUI help text to include new prompt keybindings.
src-tauri/src/cli/i18n/texts/config_actions.rs	Adds prompt create/rename overlay titles/prompts and empty-name toast text.
src-tauri/src/cli/i18n.rs	Mirrors i18n updates (help/footer/key labels/toasts/prompts) in the monolithic texts module.
src-tauri/src/cli/commands/prompts.rs	Extends CLI prompts commands: create [name] and new rename <id> [name].
README.md	Documents new/updated CLI prompt commands.
README_ZH.md	Documents new/updated CLI prompt commands (Chinese).

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[SaladDay]

LGTM, THANKS!