fix(cli): apply a server's persisted mcp.json metadata

The web client and the TUI both read `savedSettings.metadata` and pass it
as `InspectorClientOptions.defaultMetadata`. The CLI never did, and
`InspectorClient` only reads the option rather than falling back to
`serverSettings.metadata` — so a per-server `metadata` entry was silently
inert for `--cli` runs.

Pass it beside the existing `roots:`, guarded on a non-empty map the same
way web and the TUI guard theirs, so `{}` still means "no defaults".
Precedence is unchanged: call-time keys override defaults in `mergeMeta`,
so `--metadata` stays per-invocation and wins on a key collision.

Covered by three catalog-driven tests asserting against the test server's
recorded wire requests. `createTestConfig` is retyped `StoredMCPServer` —
the accurate on-disk shape — since a fixture that cannot express the
per-server keys cannot cover the settings that reach the client.

Closes #2093

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0177mPHAdECD18nLLCTwR5rh
Signed-off-by: cliffhall <cliff@futurescale.com>

clients/cli/src/cli.ts

@@ -169,6 +169,17 @@ async function callMethod(
     // the change at all: the SDK refuses `roots/list_changed` from a client
     // that never declared it, which `setRoots` logged as a send failure (#1797).
     roots: cleanRoots(serverSettings?.roots ?? []),
+    // Per-server default `_meta` from mcp.json, exactly as web (`App.tsx`) and
+    // the TUI pass it — the setting belongs to the server, not to the client
+    // that happens to read it, and `InspectorClient` only reads the option
+    // rather than falling back to `serverSettings.metadata` (#2093). Already a
+    // JSON object (#1910), so there is no pair-array flattening left to do;
+    // `{}` means "no defaults". `--metadata` stays per-invocation and wins on a
+    // key collision, since call-time keys override defaults in `mergeMeta`.
+    ...(serverSettings?.metadata &&
+      Object.keys(serverSettings.metadata).length > 0 && {
+        defaultMetadata: serverSettings.metadata,
+      }),
     serverSettings,
     // Per-server protocol era (SEP §7.8) from mcp.json → SDK versionNegotiation.
     // Absent era defaults to legacy in the InspectorClient constructor (#1626).