fix(api): typed OpenAPI query params and not-found messages that hide private projects

- Query DTO properties with a default value (limit, offset, days, perColumn,
  assignedToMe, search, archived, requiresReason, force) were documented as
  `object` in openapi.json, which broke generated clients. They now declare
  their type explicitly.
- Reading a private project, ticket, release or its comments without access
  answered "Project <internal id> not found", confirming the project exists.
  ReadAccess now reports what the caller asked for (e2e covered).

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

libs/api/tracker/application/src/lib/queries/read-access.ts

@@ -12,10 +12,18 @@ import { FindProjectsRepository } from '../ports/find-projects.repository';
 export class ReadAccess {
   constructor(private readonly findProjects: FindProjectsRepository) {}
 
-  /** The viewer's role, or null when they read a public project as an outsider. */
+  /**
+   * The viewer's role, or null when they read a public project as an outsider.
+   * `asked` is what the caller looked for: the error names it, never the
+   * project behind it (that would confirm a private project exists).
+   */
   async assertCanView(
     projectId: string,
     viewerId: string | null,
+    asked: { entity: string; ref: string } = {
+      entity: 'Project',
+      ref: projectId,
+    },
   ): Promise<ProjectRole | null> {
     const role = viewerId
       ? await this.findProjects.findRole(projectId, viewerId)
@@ -23,7 +31,7 @@ export class ReadAccess {
     if (role) return role;
     const project = await this.findProjects.findById(projectId);
     // Same answer for "doesn't exist" and "not yours": don't leak projects.
-    if (!project?.isPublic) throw new NotFoundError('Project', projectId);
+    if (!project?.isPublic) throw new NotFoundError(asked.entity, asked.ref);
     return null;
   }