[CRCR] Add nightly results view to per-repo dashboard (#8441)

## Summary

- Adds `?event=nightly` query parameter support to the per-repo CRCR
dashboard page (`/crcr/{org}/{repo}`)
- When `event=nightly`, the page shows nightly CI results grouped by SHA
with Time/SHA/Commit columns (no PR number or author)
- The CRCR summary page's nightly tab now links repos to
`/crcr/{org}/{repo}?event=nightly` so navigation is context-aware
- Creates a new `crcr_nightly_dashboard` ClickHouse query that filters
by `event_type = 'nightly'` and deduplicates by `max(run_attempt)` per
`run_id + job_name`

### Navigation flow

| Source | Link Target |
|--------|-------------|
| CRCR Summary → Pull Requests tab → click repo | `/crcr/{org}/{repo}`
(default, PR results) |
| CRCR Summary → Nightly tab → click repo |
`/crcr/{org}/{repo}?event=nightly` (nightly results) |

### Mockup

- [Nightly per-repo
mockup](https://subinz1.github.io/CRCR/oot-hud-mockup-crcr-nightly.html)
- [CRCR Summary
mockup](https://subinz1.github.io/CRCR/oot-hud-mockup-crcr-summary.html)

## Test plan

- [ ] Visit `/crcr/{org}/{repo}` — should show PR-based results (default
behavior unchanged)
- [ ] Visit `/crcr/{org}/{repo}?event=nightly` — should show nightly
results grouped by SHA
- [ ] CRCR summary nightly tab repo links navigate to `?event=nightly`
- [ ] Nightly view hides PR/Author columns and stat cards
- [ ] Time range selector works for nightly view
- [ ] Empty state displays correctly when no nightly data exists

Author: subinz1

torchci/clickhouse_queries/crcr_nightly_dashboard/params.json

@@ -0,0 +1,12 @@
+{
+  "params": {
+    "repo": "String",
+    "days": "UInt64"
+  },
+  "tests": [
+    {
+      "repo": "<company>/<repo>",
+      "days": "7"
+    }
+  ]
+}

torchci/clickhouse_queries/crcr_nightly_dashboard/query.sql

@@ -0,0 +1,42 @@
+SELECT
+    upstream_repo,
+    pytorch_head_sha,
+    workflow_name,
+    job_name,
+    check_run_id,
+    run_id,
+    run_attempt,
+    status,
+    conclusion,
+    started_at,
+    completed_at,
+    duration_seconds,
+    total_tests,
+    passed_tests,
+    failed_tests,
+    skipped_tests,
+    workflow_run_url,
+    artifact_url,
+    queue_time,
+    execution_time
+FROM
+    default.crcr_workflow_job FINAL
+WHERE
+    downstream_repo = {repo: String}
+    AND started_at > now() - INTERVAL {days: UInt64} DAY
+    AND event_type = 'nightly'
+    AND (run_id, job_name, run_attempt) IN (
+        SELECT
+            run_id,
+            job_name,
+            max(run_attempt) AS max_attempt
+        FROM default.crcr_workflow_job FINAL
+        WHERE
+            downstream_repo = {repo: String}
+            AND started_at > now() - INTERVAL {days: UInt64} DAY
+            AND event_type = 'nightly'
+        GROUP BY run_id, job_name
+    )
+ORDER BY
+    started_at DESC
+LIMIT 500