Show booking host working-hours status and manage shared availability

.changeset/email-paragraphs-escaping-doc.md

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+---
+"@agent-native/core": patch
+---
+
+Correct the `renderEmail` `paragraphs` doc comment: the strings are injected verbatim, not escaped, so callers must wrap user-supplied values in `emailStrong`/`emailQuote`.

docs/plans/2025-06-12-shared-availability-tab.md

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+# Shared Availability Tab Implementation Plan
+
+> **For the Fusion agent:** Execute this plan task-by-task. Each step is one action. Do not skip steps. Verify after each task.
+
+**Goal:** Move peer-relationship management (the sidebar "People" group) into a new
+"Shared availability" tab on the booking-links page, leaving the sidebar with only
+grid controls (colour, show/hide) for those same peers.
+
+**Architecture:** The overlay list (`calendar-overlay-people`) serves two jobs — it
+renders peer events on the grid *and* gates whether a booking-link co-host's real
+working hours are used. Splitting the surfaces by job: the booking-links page owns
+add/remove/reciprocity/request, the sidebar keeps colour + visibility only. No
+server or data-model changes; both surfaces already read the same action.
+
+**Tech Stack:** React, `useActionQuery`/`useActionMutation`, shadcn Tabs/Popover/Tooltip,
+Tabler icons, existing `get-overlay-people` / `get-host-overlay-status` /
+`send-overlay-request` actions.
+
+## Task 1: Localization keys
+
+**Files:** Modify `templates/calendar/app/i18n-data.ts`, `templates/calendar/app/i18n/zh-TW.ts`
+
+New keys under `bookingLinks`:
+
+- `sharedAvailability` — tab label
+- `sharedAvailabilityDescription` — card description
+- `sharedAvailabilityEmpty` — empty state
+- `addPeerCalendar` — add button
+- `workingHoursAppliedLabel` — short row label for the applied state
+- `workingHoursPendingScheduleLabel` — short row label, reciprocal but no schedule
+- `workingHoursNotAppliedLabel` — short row label, not reciprocal
+- `removePeerConfirm` — confirm copy for removing a peer
+
+New keys under `sidebar`:
+
+- `managePeerAvailability` — link from the sidebar to the new tab
+
+Remove now-unused `sidebar.peopleGroup`, `sidebar.overlayReciprocalTooltip`,
+`sidebar.overlayReciprocalAriaLabel` only if nothing else references them.
+
+**Verify:** `pnpm guards` i18n check passes.
+
+## Task 2: `SharedAvailabilityPanel` component
+
+**Files:** Create `templates/calendar/app/components/booking/SharedAvailabilityPanel.tsx`
+
+- `useOverlayPeople()` for the list.
+- `useHostOverlayStatus(emails, undefined, emails.length > 0)` — with no
+  `bookingLinkId` the action resolves the owner to the caller, which is correct
+  here because the tab only ever manages the signed-in user's own peers.
+- One row per peer: name/email, short status label, `HostOverlayStatusIcon`
+  (`variant="overlay"`, no `bookingLinkId`), remove button behind a confirm dialog.
+- "Add a peer's calendar" opens the existing `AddCalendarDialog` with
+  `defaultTab="people"` rather than duplicating the people picker.
+- Empty state when the overlay list is empty.
+
+**Verify:** renders in the browser with real peers; status icons match the
+booking-link chips for the same people.
+
+## Task 3: Fourth tab + URL deep link
+
+**Files:** Modify `templates/calendar/app/pages/BookingLinksPage.tsx`
+
+- Extend `type Tab` (line 247) with `"shared"`.
+- Add `TabsTrigger`/`TabsContent` (lines 1874-1884, 2287-2289).
+- Read `?tab=` on mount so the sidebar can deep-link to `?tab=shared`, and keep
+  the param in sync on tab change.
+
+**Verify:** `/calendar/booking-links?tab=shared` opens the new tab directly.
+
+## Task 4: Demote the sidebar People rows
+
+**Files:** Modify `templates/calendar/app/components/layout/Sidebar.tsx`
+
+- Drop the `People` collapsible wrapper; render peer rows flat under
+  "Other Calendars" alongside the Google rows.
+- Keep the colour picker and the eye toggle.
+- Remove the `X`/`removePerson` button — severing the booking relationship must
+  not be a hover-target next to a plain hide toggle — and remove the reciprocity
+  exchange icon, whose job the new tab now does.
+- Point the section's people `+` at `/calendar/booking-links?tab=shared`.
+- Add a "Manage shared availability" link under the peer rows.
+- Drop `useOverlayReciprocity`/`useRemoveOverlayPerson` usage and the
+  `peopleGroupOpen` state that only gated the reciprocity query.
+
+**Verify:** no `People` sub-header; peers still toggle and recolour; group and
+resource calendars unchanged.
+
+## Task 5: Tests
+
+**Files:** Create `templates/calendar/app/components/booking/SharedAvailabilityPanel.test.tsx`
+
+Cover: empty state, one row per peer, status label per state, remove requires
+confirmation, request button only on the non-reciprocal state.
+
+**Verify:** `pnpm vitest run` in the template passes.
+
+## Task 6: Full verification
+
+- `npx vitest run` (calendar template)
+- `npx tsc --noEmit -p tsconfig.json`
+- `pnpm guards`
+- Browser: sidebar has no People header, new tab lists peers with status,
+  removing a peer asks for confirmation, deep link works.