Add the quiet calendar capsule

docs/superpowers/plans/2026-08-17-calendar-agenda.md

@@ -660,7 +660,7 @@ git commit -m "Build the Prism calendar Daybook"
 - Produces: a right-side Pill showing calendar glyph plus `12m` or `Now`.
 - Produces: `applyFixture("upcoming")` and `applyFixture("outside-window")` for boundary tests.
 
-- [ ] **Step 1: Add failing capsule boundary assertions**
+- [x] **Step 1: Add failing capsule boundary assertions**
 
 Append:
 
@@ -676,13 +676,13 @@ jq -e '.capsuleVisible == false' <<<"$(qs ipc call calendar-agenda status)" >/de
 
 Run and expect RED because those fixtures do not exist.
 
-- [ ] **Step 2: Implement deterministic timing fixtures and capsule state**
+- [x] **Step 2: Implement deterministic timing fixtures and capsule state**
 
 Add `fixtureNow` to CalendarAgenda. Production uses `Date.now() / 1000`; fixture modes use their explicit clock. `upcoming` creates one timed event exactly 12 minutes ahead. `outside-window` creates one 20 minutes ahead plus an all-day event. Verify all-day never wins `nextEvent`.
 
 Use a one-minute `Timer` only while events are loaded to update relative time. Midnight refresh remains separate. There is no sub-minute repaint.
 
-- [ ] **Step 3: Build CalendarIndicator and mount it in Bar**
+- [x] **Step 3: Build CalendarIndicator and mount it in Bar**
 
 Use `Pill` with `visible: CalendarAgenda.capsuleVisible`, horizontal padding 8, a calendar Nerd Font glyph, and tabular relative text. `onActivated` opens Agenda. Import `QtQuick.Controls` and use `ToolTip.visible: root.hovered && root.visible` with the next event's title; the title must not otherwise appear in the bar.
 
@@ -690,7 +690,7 @@ Mount the indicator at the beginning of Bar's right row, before ActivityIndicato
 
 Use a single 120 ms opacity/width entrance tied to visibility. No looping animation.
 
-- [ ] **Step 4: Run capsule and full shell contracts**
+- [x] **Step 4: Run capsule and full shell contracts**
 
 ```bash
 tests/quickshell/calendar-agenda-contract.sh
@@ -699,7 +699,7 @@ for test in tests/quickshell/*.sh; do "$test"; done
 
 Expected: calendar fixture boundaries PASS and every existing Quickshell contract remains green.
 
-- [ ] **Step 5: Commit the capsule**
+- [x] **Step 5: Commit the capsule**
 
 ```bash
 git add config/dot/quickshell/modules/bar/CalendarIndicator.qml \