Merge branch 'main' into ragnorc/omnigraph-mcp-crate

Folds in v0.7.1 (release #290 + optimize/write-path/internal-table-compaction
fixes #288/#291/#297) under the MCP branch.

Conflict resolutions (5 files):
- crates/omnigraph-server/Cargo.toml: take main's 0.7.1 path-dep constraints;
  keep our omnigraph-mcp dep (bumped to 0.7.1) + http dep.
- crates/omnigraph-server/src/handlers.rs: keep our server_list_queries
  doc-comment (exposed @mcp(expose) subset, invoke_query-gated) — it supersedes
  main's pre-@mcp(expose) text, since this branch adds the per-query expose flag.
- docs/user/operations/server.md: keep our GET /queries description
  (invoke_query gate + @mcp(expose) exposure) over main's read-gated/list-all text.
- docs/dev/index.md: keep both in-flight RFC rows; renumber this branch's tenancy
  RFC 013 -> 014 (rfc-014-tenancy-cells.md) since main now owns RFC-013
  (rfc-013-write-path-latency.md). Title + index link updated; link-check green.
- openapi.json: regenerated from merged source (OMNIGRAPH_UPDATE_OPENAPI=1) — now
  info.version 0.7.1 with our invoke_query/@mcp schema.

Coherence: omnigraph-mcp bumped 0.7.0 -> 0.7.1 to match the workspace; Cargo.lock
updated. cargo build --workspace green; server/mcp/api-types/compiler suites green
(schema_routes.rs reopen-after-apply flakes under parallel IO on a near-full disk,
passes single-threaded — a pre-existing main test, unchanged by the merge).

openapi.json

@@ -7,7 +7,7 @@
       "name": "MIT",
       "identifier": "MIT"
     },
-    "version": "0.7.0"
+    "version": "0.7.1"
   },
   "paths": {
     "/graphs": {
@@ -1021,7 +1021,7 @@
         ],
         "responses": {
           "200": {
-            "description": "Stored-query catalog (the mcp.expose subset, with typed params)",
+            "description": "Stored-query catalog (every stored query, with typed params)",
             "content": {
               "application/json": {
                 "schema": {
@@ -2255,7 +2255,7 @@
       },
       "QueriesCatalogOutput": {
         "type": "object",
-        "description": "Response for `GET /queries`: the `mcp.expose` subset of a graph's\nstored-query registry, each with typed parameters.",
+        "description": "Response for `GET /queries`: every stored query in a graph's\nregistry, each with typed parameters.",
         "required": [
           "queries"
         ],