fix(mcp): allow third-party providers to approve project-scope .mcp.json servers (#696)

When a user runs openclaude with a third-party provider, project-scope
MCP servers added via `openclaude mcp add -s project ...` were silently
dropped from `/mcp` and `openclaude mcp list`. Re-adding the same
server printed "MCP server already exists in .mcp.json" but the server
never actually loaded. Reporter @gbmerrall pinpointed the cause to the
`if (usesAnthropicSetup)` gate around `handleMcpjsonServerApprovals`
in src/interactiveHelpers.tsx.

The MCP approval dialog and the CLAUDE.md external-includes warning
are about workspace trust, not about Anthropic auth. Gating them on
`usesAnthropicSetup` meant 3P-provider users never saw the dialog
that writes `enableAllProjectMcpServers: true` and
`enabledMcpjsonServers: [...]` to settings.local.json — without
those settings, the MCP server isn't loaded for use.

Drop the `usesAnthropicSetup` gate around the approval flow. The
inner logic is unchanged and `handleMcpjsonServerApprovals` already
early-returns when no servers are pending, so users without project
`.mcp.json` see no new behavior.

- src/interactiveHelpers.tsx: drop the gate, add a comment explaining
  why (and cite #696 so future readers can find context).
- src/__tests__/bugfixes.test.ts: +2 regression tests asserting the
  gate is gone and the issue is referenced.

Verified locally on Linux: build passes (v0.7.0), 1634 tests pass,
the 4 remaining failures (StartupScreen.test.ts, thinking.test.ts)
reproduce on main and are unrelated. The bundled dist/cli.mjs shows
`handleMcpjsonServerApprovals(root2)` running directly after
`setSessionTrustAccepted(true)` with no auth gate.

src/__tests__/bugfixes.test.ts

@@ -288,3 +288,30 @@ describe('Context overflow 500 fix', () => {
     expect(content).toContain('automatic compaction has failed')
   })
 })
+
+// ---------------------------------------------------------------------------
+// Fix N: Project-scope MCP servers from .mcp.json not detected for 3P providers (issue #696)
+// ---------------------------------------------------------------------------
+describe('Project-scope MCP approval — third-party providers (issue #696)', () => {
+  test('handleMcpjsonServerApprovals is NOT gated behind usesAnthropicSetup', async () => {
+    const content = await file('interactiveHelpers.tsx').text()
+
+    // The call site for handleMcpjsonServerApprovals must not sit inside an
+    // `if (usesAnthropicSetup) { ... }` block, or third-party providers will
+    // never get the dialog and project-scope .mcp.json servers will be silently
+    // dropped from /mcp listings (issue #696).
+    const approvalCallIdx = content.indexOf('await handleMcpjsonServerApprovals(root)')
+    expect(approvalCallIdx).toBeGreaterThan(-1)
+
+    // Look at the 800 chars BEFORE the call site for any `if (usesAnthropicSetup)`
+    // block that would still be open. Pick a window that's definitely inside the
+    // showSetupScreens function but not in earlier dialogs.
+    const before = content.slice(Math.max(0, approvalCallIdx - 800), approvalCallIdx)
+    expect(before).not.toMatch(/if\s*\(\s*usesAnthropicSetup\s*\)\s*{[^}]*$/)
+  })
+
+  test('issue #696 is referenced from the comment so future readers can find context', async () => {
+    const content = await file('interactiveHelpers.tsx').text()
+    expect(content).toContain('#696')
+  })
+})

src/interactiveHelpers.tsx

@@ -158,12 +158,14 @@ export async function showSetupScreens(root: Root, permissionMode: PermissionMod
     // Now that trust is established, prefetch system context if it wasn't already
     void getSystemContext();
 
-    // Skip MCP approval dialogs for third-party providers (no interactive auth prompts)
-    if (usesAnthropicSetup) {
-      // If settings are valid, check for any mcp.json servers that need approval
-      const {
-        errors: allErrors
-      } = getSettingsWithAllErrors();
+    // MCP approval and external-includes warnings are about workspace
+    // trust, not about Anthropic auth. They must run for all providers
+    // — including third-party — otherwise project-scoped .mcp.json
+    // servers never get the approval that writes
+    // enableAllProjectMcpServers / enabledMcpjsonServers into
+    // settings.local.json, and the servers are silently dropped from
+    // /mcp and `mcp list` (issue #696).
+    const { errors: allErrors } = getSettingsWithAllErrors();
     if (allErrors.length === 0) {
       await handleMcpjsonServerApprovals(root);
     }
@@ -177,7 +179,6 @@ export async function showSetupScreens(root: Root, permissionMode: PermissionMod
       await showSetupDialog(root, done => <ClaudeMdExternalIncludesDialog onDone={done} isStandaloneDialog externalIncludes={externalIncludes} />);
     }
   }
-  }
 
   // Track current repo path for teleport directory switching (fire-and-forget)
   // This must happen AFTER trust to prevent untrusted directories from poisoning the mapping