feat(mcp): sprints, epics, backlog, trash, checklists and release notes

Thirty new tools (54 in all) for what the API gained since the MCP:
create a project and read its public showcase; sprints (list, progress
and burndown, plan, change, start, close with carry-over, delete, move a
ticket in or out); epics and the backlog (list epics with progress, set
a ticket's parent, rank); bulk edit of up to 100 tickets by key, saying
which refused; the trash; checklists; following a ticket, removing a
relation, editing and deleting comments; editing and archiving releases,
drafting and saving their notes; notifications.

Searching filters by epic, sprint and dates and sorts by backlog order;
get_issue shows parent, checklist, commits and followers; create and
update take parent and start date.

API: `unreadOnly` and `dryRun` were documented as objects in the
OpenAPI; they are booleans now. Chapter 9 lists every tool; Word and PDF
regenerated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/api/openapi.json

@@ -6314,11 +6314,7 @@
             "description": "Only unread ones",
             "schema": {
               "default": false,
-              "allOf": [
-                {
-                  "$ref": "#/components/schemas/Object"
-                }
-              ]
+              "type": "boolean"
             }
           },
           {
@@ -8952,11 +8948,7 @@
             "description": "Only tell what would be created",
             "schema": {
               "default": false,
-              "allOf": [
-                {
-                  "$ref": "#/components/schemas/Object"
-                }
-              ]
+              "type": "boolean"
             }
           }
         ],
@@ -11788,10 +11780,6 @@
           "goodFirst"
         ]
       },
-      "Object": {
-        "type": "object",
-        "properties": {}
-      },
       "NotificationKind": {
         "type": "string",
         "enum": [