chore(release): all four lanes — mobile/hub/host 2026.817.322-alpha, desktop 2026.817.322

[physercoe]

Four tags go on the squash commit once this merges — one push each, since
Actions silently creates no runs when a single push carries more than three tags:

mobile-v2026.817.322-alpha    APK + IPA, non-prerelease, owns releases/latest
hub-v2026.817.322-alpha       hub-server tarballs, prerelease
host-v2026.817.322-alpha      host-runner tarballs, prerelease
electron-v2026.817.322-alpha  desktop unsigned alpha, prerelease

Stamp minted with date -u (2026-08-17 03:22 UTC). 46 commits since
2026.805.1022 — the largest gap between cuts so far.

Hub / host — 18 commits

Pane-state detection lands as a whole lane: a pure Go evaluator over herdr's
screen-manifest schema and its 19 vendored TOMLs (P1), wired into the poll tick
(P2), raising and retracting attention on a blocked pane (P3 — the first
self-retracting host-runner row), and explaining its own verdict rule by rule
through pane_explain (P4). Independents: native-resume recipes as shared YAML
pinned across Go and TypeScript (N1), and generic pane-input hardening so
multi-line input arrives as one block (Q1).

Four engine-vocabulary corrections, each found by measuring a real binary
rather than reading a spec:

What was wrong	Measured against
claude's parent_tool_use_id / subagent_type discarded, so a delegated agent's work read as the main agent's and its tokens inflated the session	claude-code 2.1.220, live sidechain probe (R5)
codex's streaming command output swallowed by the delta filter — a build showed nothing until it exited	codex M2 wire (E3)
input_image / input_file rejected outright; a PDF took the whole message down with it	codex-cli 0.147.0 (L4c)
runtime mode/model switch resolved the engine from agents.kind, the persona template — dead for every steward	(#570) + the runtime_switch_fields mask (R6)

Security: an engine-supplied engine_session_id was spliced unquoted into
the respawn backend.cmd, which tmux runs through a shell.

Read gains attachments_json (0075) and rating (0076).

Desktop — 32 commits

The Companion runs a claude (L3a) or codex (L4c) session locally with no hub
and survives quitting the app (L3b) — transcript from our own append-only log,
memory from the vendor's native resume, because those two fail separately. The
transcript gained streamed output and inline media (R4), a sub-agent panel
(R5), and model/permission pills that appear only where the switch is real
(R6). Read went from a library to a discovery workspace. Plus rich Inspect
previews, a bundled terminal font, an SFTP transfer queue, and a monochrome
theme pass.

⚠ Operators must redeploy the hub and host-runner

The 2026.730.1231 and 2026.805.1022 sections said the same about their own
51 and 17 commits. If neither redeploy happened, this cut compounds both — and
every pane-state feature above is host-runner code by construction.

Changelog gaps closed in the same pass

Neither Unreleased section was a complete record. Fixed here rather than
shipped partial:

• ~18 Fleet desktop PRs (feat(desktop): polish workbench visual system and interaction chrome #540–feat(read): add discovery monitoring workspace #575) had no entry at all — the discovery
  workspace, Inspect previews, the terminal font, SFTP, project archiving,
  appearance controls, the theme pass.
• Four hub-side changes had none: the Read library's two new columns, and
  the hub halves of R5 and R6.
• Seven feature entries were filed under ### Fixed in the desktop
  changelog (L3a, L3b, L4b, L4c, C2+C3, F4, R4), and both files carried a
  duplicate ### Fixed heading from accumulating merges.

The second commit reconciles roadmap.md, which was two releases behind, and
corrects plans/pane-state-manifests.md from "Proposed — for review" to in
flight with P1–P4 shipped.

Verification

Leg	Result
go build ./... + full go test ./...	exit 0, no FAIL
desktop tsc + vite build	exit 0, 4m43s
frontend unit tests	900 pass / 0 fail
electron shell tests	726 total — 720 pass, 6 skipped, 0 fail
lints	12/12 clean (incl. openapi, both token ratchets)
NUL / CJK scans	clean

Flutter is absent on this host, so the mobile analyze / test / APK legs are
CI-only.

🤖 Generated with Claude Code