v0.65.0 — the reTerminal launch release

The reTerminal launch release. Everything the Seeed reTerminal
E-Series needs to land as a first-class Tesserae target, plus
physical button wakes for the whole ESP32 firmware family, a
community layer, and a stack of reliability + docs work rolled up
from thirteen 0.64.x patches. Detailed per-patch notes remain
below.

Highlights

• Native firmware for the Seeed reTerminal E-Series and the wider
  XIAO ePaper family, browser-flashable at
  tesserae.ink/flash. One codebase
  (tesserae-device-firmware) covers E1001 (7.5" mono), E1002 (7.3"
  Spectra 6), E1003 (10.3" mono, 16-level grey), E1004 (13.3" Spectra
  6), the XIAO EE02 (13.3" Spectra 6), and the XIAO 7.5" mono. No
  ESP-IDF toolchain, no TRMNL account, no BYOS proxy.
• Physical button wakes on every ESP32 client. Firmware carries
  the pressed button in /frame (?button=<name>) and /status
  ({button, button_event_id}), the server resolves it through a
  per-device button_map (default: left → rotate_prev, right → rotate_next, refresh → refresh) with global + hardcoded
  fallbacks, dedups against the monotonic button_event_id,
  dispatches through an extensible action registry (rotate_prev,
  rotate_next, refresh, step:<i>, page:<page_id>,
  webhook:<url>), persists the new rotation position with a
  sticky-until-next-anchor manual override, and pushes the resulting
  page synchronously so the returned frame reflects the new state on
  the same wake. Admin UI + full History integration land at the
  same time.
• Content-Location on /frame (200 and 304) so a client that
  boots without a cached URL (non-e-ink panels, factory reset) can
  re-fetch the image without needing to have persisted the URL
  alongside its ETag. RFC 7231 §3.1.4.2 explicitly permits
  Content-Location on 304 for exactly this.
• Community layer live. Discord server up, community CTAs
  (Discussions + Discord + Sponsor) on the onboarding wrap-up step,
  the app footer, and the Settings → About card. First community
  sponsor, first external client contribution (Bernhard's
  CircuitPython client), and first external PR all landed in the
  0.64.x series ahead of the launch push.
• Widget failure isolation. A dead upstream API (e.g. the
  Open-Meteo outage on 2026-07-03) no longer sinks the whole
  dashboard render; each widget shows its own error tile and the
  rest of the page paints normally. Composer no longer waits on
  stuck HTTP threads past the overall hydration budget.
• New docs surfaces. Unified Seeed quickstart, Featured hardware
  page for the reTerminal E-Series, per-vendor Hardware SKUs section
  on the compatibility page, and a full protocol write-up for
  button events, rotation state, and the Content-Location header.

Added

• Server-side handling for physical button wakes on ESP32 devices
  (0.64.70): action registry, per-device + global button_map with
  hardcoded defaults, dedup by button_event_id (or same-button
  time-window fallback), sticky manual override, rotation envelope on
  responses, admin UI for editing the map, per-event History rows
  with the button source label + hand-tap icon + filter chip.
• Content-Location header on /api/v1/device/<id>/frame (this
  release), on both 200 and 304 responses. Zero-cost to existing
  e-ink firmwares; unlocks non-e-ink and reset-cycle recovery for
  new client families. Documented in client-protocol.md alongside
  a note that the URL is also deterministic from the render_id
  (<server-base>/renders/<render_id>.<format>) so the most memory-
  constrained targets can reconstruct without reading the header.
• Community CTAs across the app (0.64.69): Discussions + Discord
  • Sponsor on the onboarding wrap-up step, the app footer, and the
    Settings → About card. URLs live in a single app-wide context
    processor so a link update happens in one place.
• Featured Seeed hardware page on the docs site (0.64.65),
  reachable from the nav under Featured hardware and from the
  landing page's "New here?" tip. Frames the reTerminal E-Series as
  the ready-to-go hardware path (browser flash, battery-powered, no
  assembly required) with a slot for the group photo.
• Six Seeed hardware manifests (0.64.60–0.64.65): reTerminal
  E1001–E1004, XIAO ePaper EE02, XIAO ePaper 7.5" mono. Plus the
  Waveshare PhotoPainter 7.3" (0.64.60) unified under
  tesserae-device-firmware.
• Unified Seeed quickstart covering every SKU via one firmware +
  one flasher (0.64.63).
• Hardware SKUs section on the compatibility page with a per-
  vendor intro map so surfacing a new vendor is one config entry
  (0.64.64).
• History page detail line + friendly device names for button
  rows (0.64.73): device chip resolved through the registry, and a
  synthesised button right → rotate_next pushed Afternoon calendar
  line under the main row so the outcome is visible without
  expanding raw JSON.

Changed

• Install-a-client docs now lead with tesserae-device-firmware
  and the browser flasher; the standalone Waveshare firmware repos
  covered by the unified build were removed from the client table
  (0.64.67).
• README's Seeed section reframed from TRMNL BYOS to Tesserae-
  native, with every reTerminal SKU marked ✅ and every row linking
  the firmware repo. E1002 corrected from ACeP to Spectra 6, E1003
  dims corrected to 1872×1404. XIAO EE02 row added. Compatibility
  page's Seeed section gains a firmware-and-flasher intro paragraph
  via a new VENDOR_INTRO map (0.64.65).
• Docs landing page gets a ready-to-go hardware row in the "New
  here?" tip alongside "I want it running" and "I have a panel to
  drive" (0.64.65).
• Mobile dashboard editor drops the sticky preview at the top of
  the viewport in favour of the existing floating back-to-top FAB
  (0.64.66). Desktop's sticky-in-right-column behaviour is
  unchanged.
• Docker workflow's GHA cache scoped per ref
  (scope=${{ github.ref_name }}) so parallel main + tag pushes on
  a release stop racing on layer blob writes (0.64.68).
• Client-protocol spec now covers the button contract (query
  param on /frame, body fields on /status, response envelope
  shape, refresh-drops-ETag convention) and the Content-Location
  header on /frame (0.64.70 + this release).

Fixed

• Dead upstream weather API no longer sinks the whole dashboard
  render (0.64.72). Composer's ThreadPoolExecutor now shuts
  down with cancel_futures=True so stuck HTTP threads don't hold
  the composer past Playwright's page.goto budget. The four
  weather_* widgets pass retries=0 and timeout=5 to
  fetch_json so a hard Open-Meteo outage returns
  {"error": ...} to the widget in ~5s and the cell paints its
  error state instead of stalling the whole page.
• Mypy strict errors on app/button_service.py that slipped past
  local pytest (0.64.71).
• Docker workflow race on release pushes where parallel main + tag
  runs shared one GHA cache namespace and one always failed on
  error writing layer blob: not_found (0.64.68).
• Panel-preset table column widths + a stale Seeed manifest URL
  (0.64.64).