fix: show technical timestamps in tooltips

.superpowers/sdd/2026-09-22-control-panel-operational-ux-v1/task-5-report.md

@@ -55,10 +55,25 @@ write/deployment boundaries.
 
 ## Concerns
 
-- The new UX contract documents the design's full technical timestamp in the
-  title attribute. The inspected templates currently pass the human-formatted
-  timestamp as the title value; runtime code was outside this task's allowed
-  scope. Align the title value in a runtime task or revise the contract after
-  deciding the intended presentation.
+- Resolved in the timestamp tooltip follow-up below: templates now use raw ISO
+  UTC timestamps in `title` and retain localized human-readable visible text.
 - Full central tests retain the two pre-existing dependency warnings described
   above; they did not fail the suite.
+
+## Timestamp tooltip follow-up
+
+Resolved the full technical timestamp concern: agent, job, blocker, and
+populated dashboard failure timestamps now keep their localized human-readable
+text visible and expose the complete ISO UTC timestamp (including seconds and
+`+00:00`) in the `title` attribute. Blocker detail includes first- and
+last-seen timestamps. The existing raw ISO serializer now explicitly normalizes
+naive SQLite timestamps as UTC, matching the presentation layer's existing
+interpretation without changing the view-model shape.
+
+### TDD and verification
+
+- RED: `python -m pytest central/tests/test_control_panel_pages.py -q -k "localized_last_seen or localized_created or localized_seen_times or bounded_failed_job_rows"` — 4 expected failures because the tooltips did not contain the required raw ISO values.
+- GREEN: `python -m pytest central/tests/test_control_panel_pages.py -q` — passed (`12 passed`).
+- Full suite: `python -m pytest central/tests -q` — passed (`278 passed`, one existing `openpyxl` warning; pytest-asyncio also emits its existing fixture-loop deprecation warning).
+- `git diff --check` — passed.
+- Commit message: `fix: show technical timestamps in tooltips`.