feat: slash command parity + skill autocomplete — v0.50.91 (PR #711)

Combines PR #618 (@renheqiang) slash command parity (/retry /undo /stop /title /status /voice) with PR #701 (@franksong2702) skill autocomplete. 1469 tests pass. Closes #460.

Co-authored-by: renheqiang <renheqiang@users.noreply.github.com>
Co-authored-by: franksong2702 <franksong2702@users.noreply.github.com>

static/i18n.js

@@ -95,6 +95,49 @@ const LOCALES = {
     theme_usage: 'Usage: /theme ',
     theme_set: 'Theme: ',
     no_active_session: 'No active session',
+
+  slash_skill_badge:'Skill',
+  slash_skill_desc:'Invoke this skill',
+  cmd_stop:'Stop the current response',
+  cmd_title:'Get or set the session title',
+  cmd_retry:'Resend the last message',
+  cmd_undo:'Remove the last exchange',
+  cmd_status:'Show session info',
+  cmd_voice:'Toggle microphone input',
+  stream_stopped:'Response stopped.',
+  no_active_task:'No active task to stop.',
+  cancel_unavailable:'Cancel not available.',
+  retry_failed:'Retry failed: ',
+  undo_failed:'Undo failed: ',
+  undid_n_messages:'Removed',
+  undid_messages_suffix:'message(s).',
+  status_heading:'Session Status',
+  status_session_id:'Session ID',
+  status_title:'Title',
+  status_model:'Model',
+  status_workspace:'Workspace',
+  status_personality:'Personality',
+  status_messages:'Messages',
+  status_agent_running:'Agent running',
+  status_yes:'Yes',
+  status_no:'No',
+  status_load_failed:'Failed to load status: ',
+  title_current:'Current title',
+  title_change_hint:'Use `/title <new name>` to rename.',
+  title_set:'Title set to',
+  cmd_webui_only_session:'This command is not available for CLI-imported sessions.',
+  cmd_voice_use_mic:'Click the mic button in the composer.',
+  usage_heading:'Token Usage',
+  usage_default_model:'default',
+  usage_unknown:'unknown',
+  usage_input_tokens:'Input tokens',
+  usage_output_tokens:'Output tokens',
+  usage_total:'Total tokens',
+  usage_estimated_cost:'Estimated cost',
+  usage_settings_tip:'Note: cost estimates are approximate.',
+  usage_load_failed:'Failed to load usage: ',
+  usage_personality_none:'none',
+  untitled:'Untitled',
     no_personalities: 'No personalities found (add them to ~/.hermes/personalities/)',
     available_personalities: 'Available personalities:',
     personality_switch_hint: '\n\nUse `/personality <name>` to switch, or `/personality none` to clear.',