docs: add v0.6 "full event read" milestone before v1.0

Plan to surface every readable CalendarContract field (reminders, status,
availability, attendee role + self-status, timezone, URL, access level) in
the detail view before write support. Recurrence-override badges and
CATEGORIES/ATTACH stay out (the former folds into v2, the latter is a
provider limitation). Noted only — implementation comes later.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.planning/ROADMAP.md

@@ -9,14 +9,36 @@
 | v0.3 | Month + Week + Day views, view switcher | complete |
 | v0.4 | Event Detail (S4) + humanized recurrence | complete |
 | v0.5 | Calendar filter (M3) + Settings (M4) | complete |
+| v0.6 | Full event read — surface every readable field | pending |
 | v1.0 | Polish pass, F-Droid release | pending |
 
 Delivery ran ahead of the original table: Day view (S3) shipped in v0.3 and
 Event Detail (S4) in v0.4, so the Filter/Settings milestone became v0.5.
 
 Jump-to-date (the date-picker half of M2) was **cut from scope** and will not
-ship. The "Today" half of M2 already shipped in v0.5 (drawer entry). V1 is
-therefore feature-complete; only a polish/QA pass remains.
+ship. The "Today" half of M2 already shipped in v0.5 (drawer entry).
+
+## v0.6 — Full event read
+
+Round out the read-only model so a detail view shows everything the system
+actually stores, before write support starts. Scope = `CalendarContract`
+columns we don't yet read/display:
+
+- **Reminders** (`VALARM`) — read `CalendarContract.Reminders`, list lead times
+- **Status** — Confirmed / Tentative / Cancelled (cancelled shown struck-through)
+- **Availability** (`TRANSP`) — Free / Busy chip
+- **Attendee extras** — role (required / optional / organizer) + the user's own
+  `SELF_ATTENDEE_STATUS`
+- **Timezone** (`EVENT_TIMEZONE`) — shown only when it differs from the device zone
+- **URL** — tappable link card
+- **Access level / class** (private / confidential) — small chip (optional, trivial)
+
+Deliberately out of v0.6:
+- Recurrence exception / modified-occurrence badges — `Instances` already
+  resolves correct per-occurrence times for display; this only matters for
+  editing, so it folds into v2
+- `CATEGORIES`, `ATTACH` — not reliably exposed by `CalendarContract`
+  (provider limitation, not our choice)
 
 ## v1.0 — First Public Release