refactor(registry): move MCP servers from code to JSON manifests (#1144)

* refactor(registry): move MCP server entries from code to JSON manifests

Move 8 hardcoded MCP server RegistryEntry structs from
builtin_entries() into data-driven JSON files under
registry/mcp-servers/, matching the existing pattern used by
tools and channels. Exclude the GitHub MCP entry which conflicts
with the WASM GitHub tool's OAuth flow.

Extend ManifestKind with McpServer, make version/source optional
on ExtensionManifest (MCP servers don't need them), and add
url/auth fields for MCP-specific config. Update build.rs,
embedded catalog, catalog loader, installer, and CLI display
to handle the new kind and optional fields.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* fix(registry): address PR review — add missing slack-mcp, remove .expect(), fix fmt

- Add missing slack-mcp.json (was dropped during migration)
- Remove production .expect() in get_strict(), replace with .ok_or_else()
- Clean up unwrap_or_default() in key_for() to use .next() directly
- Log warning for MCP manifests missing url field instead of silent empty
- Run cargo fmt to fix formatting diffs

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* ci: re-trigger CI with correct base branch (staging)

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* fix(ci): improve no-panics check to properly exclude test modules

The grep-based filter only excluded lines literally containing
#[cfg(test)], #[test], or 'mod tests' — not lines *inside* test
modules. Use awk to track hunk context from diff @@ headers and
skip all added lines within test module hunks.

[skip-regression-check]

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* refactor(registry): remove slack-mcp MCP entry (conflicts with WASM slack tool)

Remove slack-mcp.json alongside the already-excluded github MCP
entry — both conflict with existing WASM tools of the same name.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* fix(registry): address re-review — skip invalid MCP entries, fix install order

- to_registry_entry() now returns Option<RegistryEntry>; MCP manifests
  missing a url field are skipped with a warning instead of creating
  broken entries with empty URLs
- Move McpServer early-return before require_source() in install paths
  so the error message is clear ("cannot install MCP servers") rather
  than the misleading "missing source spec"
- Add test for MCP manifest with missing URL returning None

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <[email protected]>

registry/mcp-servers/asana.json

@@ -0,0 +1,9 @@
+{
+  "name": "asana",
+  "display_name": "Asana",
+  "kind": "mcp_server",
+  "description": "Connect to Asana for task management, projects, and team coordination",
+  "keywords": ["tasks", "projects", "management", "team"],
+  "url": "https://mcp.asana.com/v2/mcp",
+  "auth": "dcr"
+}

registry/mcp-servers/cloudflare.json

@@ -0,0 +1,9 @@
+{
+  "name": "cloudflare",
+  "display_name": "Cloudflare",
+  "kind": "mcp_server",
+  "description": "Connect to Cloudflare for DNS, Workers, KV, and infrastructure management",
+  "keywords": ["cdn", "dns", "workers", "hosting", "infrastructure"],
+  "url": "https://mcp.cloudflare.com/mcp",
+  "auth": "dcr"
+}

registry/mcp-servers/intercom.json

@@ -0,0 +1,9 @@
+{
+  "name": "intercom",
+  "display_name": "Intercom",
+  "kind": "mcp_server",
+  "description": "Connect to Intercom for customer messaging, support, and engagement",
+  "keywords": ["support", "customers", "messaging", "chat", "helpdesk"],
+  "url": "https://mcp.intercom.com/mcp",
+  "auth": "dcr"
+}

registry/mcp-servers/linear.json

@@ -0,0 +1,9 @@
+{
+  "name": "linear",
+  "display_name": "Linear",
+  "kind": "mcp_server",
+  "description": "Connect to Linear for issue tracking, project management, and team workflows",
+  "keywords": ["issues", "tickets", "project", "tracking", "bugs"],
+  "url": "https://mcp.linear.app/sse",
+  "auth": "dcr"
+}

registry/mcp-servers/notion.json

@@ -0,0 +1,9 @@
+{
+  "name": "notion",
+  "display_name": "Notion",
+  "kind": "mcp_server",
+  "description": "Connect to Notion for reading and writing pages, databases, and comments",
+  "keywords": ["notes", "wiki", "docs", "pages", "database"],
+  "url": "https://mcp.notion.com/mcp",
+  "auth": "dcr"
+}

registry/mcp-servers/sentry.json

@@ -0,0 +1,9 @@
+{
+  "name": "sentry",
+  "display_name": "Sentry",
+  "kind": "mcp_server",
+  "description": "Connect to Sentry for error tracking, performance monitoring, and debugging",
+  "keywords": ["errors", "monitoring", "debugging", "crashes", "performance"],
+  "url": "https://mcp.sentry.dev/mcp",
+  "auth": "dcr"
+}

registry/mcp-servers/stripe.json

@@ -0,0 +1,9 @@
+{
+  "name": "stripe",
+  "display_name": "Stripe",
+  "kind": "mcp_server",
+  "description": "Connect to Stripe for payment processing, subscriptions, and financial data",
+  "keywords": ["payments", "billing", "subscriptions", "invoices", "finance"],
+  "url": "https://mcp.stripe.com",
+  "auth": "dcr"
+}