feat: CLI v2.1.81 features + global CLAUDE.md editor (#263)

## Summary

Implements support for Claude Code CLI v2.1.81 features and adds a global CLAUDE.md editor, closing issues #237, #239, #244, #245, #246, #247, #248, and #262.

### Stream-JSON forward-compatibility (#245, #246, #247, #248)

- **#248** — `output_style` field added to `System` init message; silently accepted for forward-compat
- **#245** — `fast_mode_state` field added to `Result` message; logged at debug level
- **#246** — `model_usage` field added to `Result` message; per-model breakdown logged at debug level
- **#247** — `total_cost_usd` field added to `Result` message; authoritative cost logged at debug level

### New config options (#237, #239, #244)

- **#237** — `bare_mode` config toggle: passes `--bare` to Claude Code, suppressing UI chrome for scripted headless `-p` calls
- **#239** — `show_clear_context_on_plan_accept` toggle: passes `showClearContextOnPlanAccept: false` in `--settings` when disabled
- **#244** — `custom_model_option` text field: sets `ANTHROPIC_CUSTOM_MODEL_OPTION` env var for custom model providers

### Global CLAUDE.md editor (#262)

- New Tauri commands `get_global_claude_md` / `save_global_claude_md` read/write `~/.claude/CLAUDE.md` (creates file + directory if absent)
- New "Global Instructions" section in the Config Sidebar with a textarea and Save button

### Bug fix (pre-existing)

`disable_cron` and `disable_skill_shell_execution` were saved to `HikariConfig` but never passed to `start_claude` invocations — fixed in all 9 call sites. All 3 new config fields are also wired through all 9 call sites.

All changes pass `check-all.sh` (ESLint → Prettier → svelte-check → Vitest → Clippy → cargo test with llvm-cov).

✨ This PR was created with help from Hikari~ 🌸

Reviewed-on: #263
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

src/lib/commands/slashCommands.ts

@@ -67,11 +67,16 @@ async function changeDirectory(path: string): Promise<void> {
         use_worktree: config.use_worktree ?? false,
         disable_1m_context: config.disable_1m_context ?? false,
         max_output_tokens: config.max_output_tokens ?? null,
+        disable_cron: config.disable_cron ?? false,
+        disable_skill_shell_execution: config.disable_skill_shell_execution ?? false,
         include_git_instructions: config.include_git_instructions ?? true,
         enable_claudeai_mcp_servers: config.enable_claudeai_mcp_servers ?? true,
         auto_memory_directory: config.auto_memory_directory || null,
         model_overrides: config.model_overrides || null,
         session_name: null,
+        bare_mode: config.bare_mode ?? false,
+        show_clear_context_on_plan_accept: config.show_clear_context_on_plan_accept ?? true,
+        custom_model_option: config.custom_model_option || null,
       },
     });
 
@@ -149,11 +154,16 @@ async function startNewConversation(): Promise<void> {
         use_worktree: config.use_worktree ?? false,
         disable_1m_context: config.disable_1m_context ?? false,
         max_output_tokens: config.max_output_tokens ?? null,
+        disable_cron: config.disable_cron ?? false,
+        disable_skill_shell_execution: config.disable_skill_shell_execution ?? false,
         include_git_instructions: config.include_git_instructions ?? true,
         enable_claudeai_mcp_servers: config.enable_claudeai_mcp_servers ?? true,
         auto_memory_directory: config.auto_memory_directory || null,
         model_overrides: config.model_overrides || null,
         session_name: null,
+        bare_mode: config.bare_mode ?? false,
+        show_clear_context_on_plan_accept: config.show_clear_context_on_plan_accept ?? true,
+        custom_model_option: config.custom_model_option || null,
       },
     });
 

src/lib/components/ConfigSidebar.svelte

@@ -64,6 +64,9 @@
     auto_memory_directory: null,
     model_overrides: null,
     disable_skill_shell_execution: false,
+    bare_mode: false,
+    show_clear_context_on_plan_accept: true,
+    custom_model_option: null,
     max_output_tokens: null,
     trusted_workspaces: [],
     background_image_path: null,
@@ -86,6 +89,9 @@
   let customUiFontStatus: string | null = $state(null);
   let modelOverridesJson = $state("");
   let modelOverridesError: string | null = $state(null);
+  let globalClaudeMd = $state("");
+  let globalClaudeMdSaving = $state(false);
+  let globalClaudeMdSaveStatus: string | null = $state(null);
 
   interface AuthStatus {
     is_logged_in: boolean;
@@ -123,6 +129,9 @@
     if (open && authStatus === null) {
       void refreshAuthStatus();
     }
+    if (open) {
+      void loadGlobalClaudeMd();
+    }
   });
 
   configStore.saveError.subscribe((error) => {
@@ -198,6 +207,30 @@
     }
   }
 
+  async function loadGlobalClaudeMd() {
+    try {
+      globalClaudeMd = await invoke<string>("get_global_claude_md");
+    } catch (error) {
+      console.error("Failed to load global CLAUDE.md:", error);
+    }
+  }
+
+  async function saveGlobalClaudeMd() {
+    globalClaudeMdSaving = true;
+    globalClaudeMdSaveStatus = null;
+    try {
+      await invoke("save_global_claude_md", { content: globalClaudeMd });
+      globalClaudeMdSaveStatus = "Saved!";
+      setTimeout(() => {
+        globalClaudeMdSaveStatus = null;
+      }, 2000);
+    } catch (error) {
+      globalClaudeMdSaveStatus = `Error: ${error}`;
+    } finally {
+      globalClaudeMdSaving = false;
+    }
+  }
+
   async function handleSave() {
     isSaving = true;
     saveError = null;
@@ -679,6 +712,59 @@
           defaults.
         </p>
       </div>
+
+      <!-- Bare Mode -->
+      <div class="mb-4">
+        <label class="flex items-center gap-3 cursor-pointer">
+          <input
+            type="checkbox"
+            bind:checked={config.bare_mode}
+            class="w-4 h-4 rounded border-[var(--border-color)] bg-[var(--bg-primary)] text-[var(--accent-primary)] focus:ring-[var(--accent-primary)]"
+          />
+          <span class="text-sm text-[var(--text-primary)]">Bare mode</span>
+        </label>
+        <p class="text-xs text-[var(--text-tertiary)] mt-1 ml-7">
+          Passes <code class="font-mono">--bare</code> to suppress UI chrome — useful for scripted
+          headless <code class="font-mono">-p</code> calls (requires Claude Code v2.1.81+)
+        </p>
+      </div>
+
+      <!-- Show Clear Context on Plan Accept -->
+      <div class="mb-4">
+        <label class="flex items-center gap-3 cursor-pointer">
+          <input
+            type="checkbox"
+            bind:checked={config.show_clear_context_on_plan_accept}
+            class="w-4 h-4 rounded border-[var(--border-color)] bg-[var(--bg-primary)] text-[var(--accent-primary)] focus:ring-[var(--accent-primary)]"
+          />
+          <span class="text-sm text-[var(--text-primary)]"
+            >Show clear context prompt on plan accept</span
+          >
+        </label>
+        <p class="text-xs text-[var(--text-tertiary)] mt-1 ml-7">
+          When enabled, prompts to clear context when accepting a plan. Passes
+          <code class="font-mono">showClearContextOnPlanAccept: false</code> in
+          <code class="font-mono">--settings</code> when disabled (requires Claude Code v2.1.81+)
+        </p>
+      </div>
+
+      <!-- Custom Model Option -->
+      <div class="mb-4">
+        <label for="custom-model-option" class="block text-sm text-[var(--text-primary)] mb-1">
+          Custom model option <span class="text-[var(--text-tertiary)]">(optional)</span>
+        </label>
+        <input
+          id="custom-model-option"
+          type="text"
+          placeholder="Leave blank to use default"
+          bind:value={config.custom_model_option}
+          class="w-full px-3 py-2 text-sm bg-[var(--bg-primary)] border border-[var(--border-color)] rounded text-[var(--text-primary)] placeholder-[var(--text-tertiary)] focus:outline-none focus:border-[var(--accent-primary)]"
+        />
+        <p class="text-xs text-[var(--text-tertiary)] mt-1">
+          Sets <code class="font-mono">ANTHROPIC_CUSTOM_MODEL_OPTION</code> environment variable for custom
+          model providers (requires Claude Code v2.1.81+)
+        </p>
+      </div>
     </section>
 
     <!-- Greeting Section -->
@@ -719,6 +805,47 @@
       {/if}
     </section>
 
+    <!-- Global Instructions Section -->
+    <section class="mb-6">
+      <h3 class="text-sm font-medium text-[var(--accent-primary)] uppercase tracking-wider mb-3">
+        Global Instructions
+      </h3>
+      <div class="mb-2">
+        <label for="global-claude-md" class="block text-sm text-[var(--text-secondary)] mb-1">
+          ~/.claude/CLAUDE.md
+        </label>
+        <textarea
+          id="global-claude-md"
+          bind:value={globalClaudeMd}
+          rows="12"
+          placeholder="Add persistent instructions for all Claude Code sessions..."
+          class="w-full px-3 py-2 bg-[var(--bg-primary)] border border-[var(--border-color)] rounded-lg text-[var(--text-primary)] font-mono text-sm focus:outline-none focus:border-[var(--accent-primary)] resize-y"
+        ></textarea>
+      </div>
+      <div class="flex items-center gap-2">
+        <button
+          onclick={saveGlobalClaudeMd}
+          disabled={globalClaudeMdSaving}
+          class="px-3 py-1.5 text-sm bg-[var(--accent-primary)] text-white rounded hover:opacity-90 disabled:opacity-50 disabled:cursor-not-allowed"
+        >
+          {globalClaudeMdSaving ? "Saving..." : "Save"}
+        </button>
+        {#if globalClaudeMdSaveStatus}
+          <span
+            class="text-xs {globalClaudeMdSaveStatus.startsWith('Error')
+              ? 'text-red-500'
+              : 'text-green-500'}"
+          >
+            {globalClaudeMdSaveStatus}
+          </span>
+        {/if}
+      </div>
+      <p class="text-xs text-[var(--text-tertiary)] mt-2">
+        Persistent instructions applied to all Claude Code sessions. Changes take effect on the next
+        session start.
+      </p>
+    </section>
+
     <!-- MCP Servers Section -->
     <section class="mb-6">
       <h3 class="text-sm font-medium text-[var(--accent-primary)] uppercase tracking-wider mb-3">

src/lib/components/ElicitationModal.svelte

@@ -68,11 +68,16 @@
           allowed_tools: grantedToolsList,
           use_worktree: config.use_worktree ?? false,
           disable_1m_context: config.disable_1m_context ?? false,
+          disable_cron: config.disable_cron ?? false,
+          disable_skill_shell_execution: config.disable_skill_shell_execution ?? false,
           include_git_instructions: config.include_git_instructions ?? true,
           enable_claudeai_mcp_servers: config.enable_claudeai_mcp_servers ?? true,
           auto_memory_directory: config.auto_memory_directory || null,
           model_overrides: config.model_overrides || null,
           session_name: null,
+          bare_mode: config.bare_mode ?? false,
+          show_clear_context_on_plan_accept: config.show_clear_context_on_plan_accept ?? true,
+          custom_model_option: config.custom_model_option || null,
         },
       });
 

src/lib/components/InputBar.svelte

@@ -402,11 +402,16 @@ User: ${formattedMessage}`;
               allowed_tools: allAllowedTools,
               use_worktree: config.use_worktree ?? false,
               disable_1m_context: config.disable_1m_context ?? false,
+              disable_cron: config.disable_cron ?? false,
+              disable_skill_shell_execution: config.disable_skill_shell_execution ?? false,
               include_git_instructions: config.include_git_instructions ?? true,
               enable_claudeai_mcp_servers: config.enable_claudeai_mcp_servers ?? true,
               auto_memory_directory: config.auto_memory_directory || null,
               model_overrides: config.model_overrides || null,
               session_name: null,
+              bare_mode: config.bare_mode ?? false,
+              show_clear_context_on_plan_accept: config.show_clear_context_on_plan_accept ?? true,
+              custom_model_option: config.custom_model_option || null,
             },
           });
 

src/lib/components/PermissionModal.svelte

@@ -89,11 +89,16 @@
           allowed_tools: [...new Set([...newGrantedTools, ...config.auto_granted_tools])],
           use_worktree: config.use_worktree ?? false,
           disable_1m_context: config.disable_1m_context ?? false,
+          disable_cron: config.disable_cron ?? false,
+          disable_skill_shell_execution: config.disable_skill_shell_execution ?? false,
           include_git_instructions: config.include_git_instructions ?? true,
           enable_claudeai_mcp_servers: config.enable_claudeai_mcp_servers ?? true,
           auto_memory_directory: config.auto_memory_directory || null,
           model_overrides: config.model_overrides || null,
           session_name: null,
+          bare_mode: config.bare_mode ?? false,
+          show_clear_context_on_plan_accept: config.show_clear_context_on_plan_accept ?? true,
+          custom_model_option: config.custom_model_option || null,
         },
       });
 

src/lib/components/StatusBar.svelte

@@ -94,6 +94,9 @@
     auto_memory_directory: null,
     model_overrides: null,
     disable_skill_shell_execution: false,
+    bare_mode: false,
+    show_clear_context_on_plan_accept: true,
+    custom_model_option: null,
   });
 
   let streamerModeActive = $state(false);
@@ -175,11 +178,17 @@
           use_worktree: currentConfig.use_worktree ?? false,
           disable_1m_context: currentConfig.disable_1m_context ?? false,
           max_output_tokens: currentConfig.max_output_tokens ?? null,
+          disable_cron: currentConfig.disable_cron ?? false,
+          disable_skill_shell_execution: currentConfig.disable_skill_shell_execution ?? false,
           include_git_instructions: currentConfig.include_git_instructions ?? true,
           enable_claudeai_mcp_servers: currentConfig.enable_claudeai_mcp_servers ?? true,
           auto_memory_directory: currentConfig.auto_memory_directory || null,
           model_overrides: currentConfig.model_overrides || null,
           session_name: activeConversationForName?.name || null,
+          bare_mode: currentConfig.bare_mode ?? false,
+          show_clear_context_on_plan_accept:
+            currentConfig.show_clear_context_on_plan_accept ?? true,
+          custom_model_option: currentConfig.custom_model_option || null,
         },
       });
 
@@ -337,11 +346,17 @@
           use_worktree: currentConfig.use_worktree ?? false,
           disable_1m_context: currentConfig.disable_1m_context ?? false,
           max_output_tokens: currentConfig.max_output_tokens ?? null,
+          disable_cron: currentConfig.disable_cron ?? false,
+          disable_skill_shell_execution: currentConfig.disable_skill_shell_execution ?? false,
           include_git_instructions: currentConfig.include_git_instructions ?? true,
           enable_claudeai_mcp_servers: currentConfig.enable_claudeai_mcp_servers ?? true,
           auto_memory_directory: currentConfig.auto_memory_directory || null,
           model_overrides: currentConfig.model_overrides || null,
           session_name: null,
+          bare_mode: currentConfig.bare_mode ?? false,
+          show_clear_context_on_plan_accept:
+            currentConfig.show_clear_context_on_plan_accept ?? true,
+          custom_model_option: currentConfig.custom_model_option || null,
         },
       });
 

src/lib/components/TaskLoopPanel.svelte

@@ -218,11 +218,16 @@
           use_worktree: cfg.use_worktree ?? false,
           disable_1m_context: cfg.disable_1m_context ?? false,
           max_output_tokens: cfg.max_output_tokens ?? null,
+          disable_cron: cfg.disable_cron ?? false,
+          disable_skill_shell_execution: cfg.disable_skill_shell_execution ?? false,
           include_git_instructions: cfg.include_git_instructions ?? true,
           enable_claudeai_mcp_servers: cfg.enable_claudeai_mcp_servers ?? true,
           auto_memory_directory: cfg.auto_memory_directory || null,
           model_overrides: cfg.model_overrides || null,
           session_name: null,
+          bare_mode: cfg.bare_mode ?? false,
+          show_clear_context_on_plan_accept: cfg.show_clear_context_on_plan_accept ?? true,
+          custom_model_option: cfg.custom_model_option || null,
         },
       });
     } catch (error) {

src/lib/components/UserQuestionModal.svelte

@@ -108,11 +108,16 @@
           allowed_tools: grantedToolsList,
           use_worktree: config.use_worktree ?? false,
           disable_1m_context: config.disable_1m_context ?? false,
+          disable_cron: config.disable_cron ?? false,
+          disable_skill_shell_execution: config.disable_skill_shell_execution ?? false,
           include_git_instructions: config.include_git_instructions ?? true,
           enable_claudeai_mcp_servers: config.enable_claudeai_mcp_servers ?? true,
           auto_memory_directory: config.auto_memory_directory || null,
           model_overrides: config.model_overrides || null,
           session_name: null,
+          bare_mode: config.bare_mode ?? false,
+          show_clear_context_on_plan_accept: config.show_clear_context_on_plan_accept ?? true,
+          custom_model_option: config.custom_model_option || null,
         },
       });
 

src/lib/stores/config.test.ts

@@ -226,6 +226,9 @@ describe("config store", () => {
         auto_memory_directory: null,
         model_overrides: null,
         disable_skill_shell_execution: false,
+        bare_mode: false,
+        show_clear_context_on_plan_accept: true,
+        custom_model_option: null,
       };
 
       expect(config.model).toBe("claude-sonnet-4");
@@ -291,6 +294,9 @@ describe("config store", () => {
         auto_memory_directory: null,
         model_overrides: null,
         disable_skill_shell_execution: false,
+        bare_mode: false,
+        show_clear_context_on_plan_accept: true,
+        custom_model_option: null,
       };
 
       expect(config.model).toBeNull();
@@ -911,6 +917,9 @@ describe("config store", () => {
         auto_memory_directory: null,
         model_overrides: null,
         disable_skill_shell_execution: false,
+        bare_mode: false,
+        show_clear_context_on_plan_accept: true,
+        custom_model_option: null,
       };
 
       const mockInvokeImpl = vi.mocked(invoke);

src/lib/stores/config.ts

@@ -93,6 +93,12 @@ export interface HikariConfig {
   model_overrides: Record<string, string> | null;
   // Prevents skill scripts from executing shell commands (Claude Code v2.1.91+)
   disable_skill_shell_execution: boolean;
+  // Bare mode — suppress UI chrome for scripted headless -p calls (v2.1.81+)
+  bare_mode: boolean;
+  // Show clear context dialog when accepting a plan (v2.1.81+)
+  show_clear_context_on_plan_accept: boolean;
+  // Custom model option env var (v2.1.81+)
+  custom_model_option: string | null;
 }
 
 const defaultConfig: HikariConfig = {
@@ -152,6 +158,9 @@ const defaultConfig: HikariConfig = {
   auto_memory_directory: null,
   model_overrides: null,
   disable_skill_shell_execution: false,
+  bare_mode: false,
+  show_clear_context_on_plan_accept: true,
+  custom_model_option: null,
 };
 
 function createConfigStore() {