FN-5758: add cited-goal audit aggregation and runtime route

Add end-to-end goal-citation audit trail plumbing across core, engine, CLI, and dashboard.

- extend goal citation extraction with aggregation logic and new core coverage
- expose cited-goal runtime data through dashboard routes with dedicated API tests
- wire goal-citation audit details into engine diagnostics and CLI extension audit expectations
- document the new audit behavior and publish a patch changeset for @runfusion/fusion

Files changed:
 .changeset/fn-5758-goal-citation-audit.md          |  9 +++
 docs/dashboard-guide.md                            |  2 +
 docs/diagnostics.md                                |  4 ++
 .../__tests__/extension-goal-tools-audit.test.ts   |  6 +-
 packages/cli/src/extension.ts                      |  3 +
 .../goal-citation-audit-aggregation.test.ts        | 63 ++++++++++++++++++
 packages/core/src/goal-citation-extractor.ts       | 54 ++++++++++++++-
 packages/core/src/index.ts                         |  1 +
 .../src/__tests__/routes-run-cited-goals.test.ts   | 77 ++++++++++++++++++++++
 packages/dashboard/src/routes.ts                   | 11 ++++
 .../src/routes/register-agent-runtime-routes.ts    | 49 ++++++++++++++
 .../src/__tests__/goal-anchoring-audit.test.ts     | 40 +++++++----
 packages/engine/src/goal-anchoring-audit.ts        |  4 ++
 packages/engine/src/goal-injection-diagnostics.ts  |  1 +
 14 files changed, 308 insertions(+), 16 deletions(-)

Fusion-Task-Id: FN-5758

Fusion-Task-Lineage: b077c0b7-6ca4-489d-8c36-73d80a2afdb2

packages/core/src/index.ts

@@ -736,6 +736,7 @@ export type {
 export {
   extractGoalCitations,
   buildSnippet,
+  collectCitedGoalIdsFromAudit,
   GOAL_ID_PATTERN,
   GOAL_CITATION_SNIPPET_MAX,
 } from "./goal-citation-extractor.js";