MidTerm 9.19

Warning

Packaging for this stable release failed before platform binaries and npm 9.19.0 were published. The native installers and npm launcher therefore cannot install v9.19.0 through releases/latest.

The verified prerelease v9.19.6-dev is available for development-channel users. If you require the stable channel, wait for the corrected stable promotion.

What's Changed

All changes since v9.18.0:

v9.18.1-dev: Fix Dev Browser upstream previews

• Fixed Dev Browser upstream connection handling so mixed IPv6/IPv4 dynamic DNS targets fall back to a reachable address instead of surfacing MidTerm's timeout page.
• Dev Browser previews now proceed through upstream HTTPS certificate validation errors for explicitly targeted preview URLs, so expired-cert share pages can render their real upstream error page.
• Added WebPreviewService regression coverage and documented upstream TLS/DNS behavior.

v9.18.2-dev: Browser perf diagnostics

• Adds an opt-in browser performance recorder under mmDebug.perf for capturing RAF frame pacing, long tasks, browser state, and terminal/WebGL summaries from the affected MidTerm window.

v9.18.3-dev: Harden degraded mux transport

• Detect slow mux WebSocket clients and temporarily prioritize active or visible terminal sessions over hidden background output.
• Add browser-side backoff for transport-loss buffer refreshes so repeated data loss cannot trigger tight replay loops.
• Cover the degraded mux delivery policy and transport-loss refresh backoff with targeted tests.

v9.18.4-dev: Keep dev macOS release artifacts when Apple notarization is blocked

• Allow dev prerelease macOS artifacts to continue when Apple notarization is blocked by an expired or missing Developer agreement.
• Keep stable release notarization strict while preserving signed macOS dev artifacts for test distribution.

v9.18.5-dev: Restore strict dev macOS notarization

• Restore strict Apple notarization for dev prerelease macOS artifacts now that the Apple Developer agreement has been renewed.

v9.18.6-dev: Prune Lens history measurement cache

• Prune stale Lens history measurement caches outside the active history window.
• Add regression coverage for AppServerControl measurement cache pruning.

v9.18.7-dev: Fix terminal corruption after mux data loss

• Mux resync now fully resets the terminal parser state, so buffer replays recover sessions whose dropped bytes left a stuck charset or half-parsed escape sequence (all characters rendering as symbols until page refresh)
• Degraded-transport suppression of hidden session output is now an accounted loss: the client receives a data-loss frame when delivery resumes and requests a resync instead of continuing silently on a holed byte stream

v9.18.8-dev: Mobile UX, WebGL renderer, and git chip fixes; refreshed GitHub landing

• Compact mobile sidebar rows with a touch dropdown action menu - roughly twice as many sessions visible per screen, close action stays neutral until pressed
• Mobile Dev Browser dock becomes a real phone layout: full-viewport overlay, 44px touch chrome, two-row URL bar, and opening the dock reuses an existing named preview target instead of adding an empty default tab
• Sidebar git chip shows the repo label and real branch instead of 'repo - HEAD +0 -0': status is refreshed before repos are announced, explicit labels apply to the primary repo, and bare statuses no longer synthesize placeholder chips
• Shared WebGL glyph atlas hardening: per-renderer invalidation generations and page-identity tracking remove the permanent every-frame model rebuild after atlas merges and a latent stale-texture aliasing path; session-switch churn no longer clears the shared atlas
• GitHub landing refreshed with a banner built from the real product logo and three current screenshots; frontend codegen now runs project-local binaries so dev builds cannot lint-drift

v9.18.9-dev: Atomic terminal recovery

• Atomic per-session terminal recovery with sequence cursors and explicit gap detection.
• Bounded priority WebSocket writer prevents slow-client memory growth while preserving active-terminal latency.
• Recovery telemetry, lifecycle and WebGL trigger cleanup, and mobile CPU/memory regression coverage.

v9.18.10-dev: Remote-first Mobile Device Lab

• Adds an optional local Chrome MV3 bridge for real top-level Pixel 8 emulation even when MidTerm runs remotely.
• Separates fast responsive-frame sizing from Chromium touch, UA, DPR, rotation, lifecycle, keyboard-viewport, screenshot, and DOM automation behavior.
• Adds mt_mobile controls and ships the bridge as a downloadable no-runtime-dependency ZIP.

v9.18.11-dev: Surface embedded Chrome bridge download

• Shows the embedded Chrome bridge download directly in the Dev Browser toolbar whenever no local bridge is connected.
• Switches the same control to the Pixel 8 device action after the extension handshake succeeds.
• Keeps the overflow download as a fallback and verifies the ZIP remains embedded in published MidTerm binaries.

v9.18.12-dev: Serve embedded Chrome bridge archive

• Fixes published single-binary MidTerm builds so the embedded Chrome bridge ZIP resolves at its UI download path.
• Adds ZIP-aware embedded-resource path mapping, an explicit application/zip content type, and an assembly-level regression test.
• Includes the direct toolbar download introduced in v9.18.11-dev.

v9.18.13-dev: Chrome Web Store device bridge install

• Install the Mobile Device Bridge from its Chrome Web Store listing when the local bridge is not connected.
• Keep the embedded ZIP download available in the Dev Browser overflow menu as a manual fallback.
• Add reproducible store assets, privacy disclosures, packaging, and future Chrome Web Store publishing automation for extension mipkpmmedaoighaadeedfedimiaaekcn.

v9.18.14-dev: Deterministic agent operator workflow

• Adds durable Terminal prompt, paste, image, and file history with replay in the browser and generated mt CLI helpers.
• Adds the agent-written control plane and dense Operator view for exact session facts, work items, published status, and checkpoints across Hub machines.
• Adds explicit multi-session dispatch, runtime capability discovery, and ordered control-plane events without PTY-text or timing inference.

v9.18.15-dev: Restore sidebar and expose input history

• Restore the original Bookmarks label, star, behavior, and inherited sidebar colors.
• Expose Terminal prompt, paste, image, and file history through a direct Prompt & Paste sidebar entry and Alt+H.
• Remove the parallel History tab and input-kind color treatment so the new surface reuses MidTerm styling.

v9.18.16-dev: Session-owned prompt and paste history

• Moved Prompt & Paste from global navigation into each session top bar while preserving the existing theme and Bookmarks surface.
• Required session-scoped input-history queries and locked UI replay to the menu owner; generated mt helpers now reject sessionless listing.
• Added mobile access and verified 50 open/close cycles with zero retained menu DOM nodes.

v9.18.17-dev: Simplify the session history label

• Renamed the per-session Prompt & Paste action to History across all supported UI languages.
• Kept the existing session ownership, styling, shortcut, and deterministic capture behavior unchanged.

v9.18.18-dev: Per-session terminal input timeline

• Captures browser-authored terminal submissions per session when plain Enter actually sends them.
• Keeps Shift/Ctrl/Alt/Meta+Enter, Codex multiline bursts, and pasted newlines inside one history item.
• Renders History as a timestamped vertical timeline with text and pasted-image thumbnails.

v9.18.19-dev: Polish the session History menu

• Tightens the per-session History menu to a compact 360px layout with aligned timeline rows.
• Uses full 36px replay and delete targets with clear SVG icons instead of legacy 18px font glyphs.
• Keeps keyboard actions isolated so delete/replay controls cannot trigger the parent row action.

v9.18.20-dev: Restore mobile PWA installation

• Make the root MidTerm URL installable with a root-scoped manifest and service worker.
• Keep Install as App usable after a dismissed or unavailable native browser prompt.
• Show localized manual install steps on Android, iOS, and other browsers.

v9.18.21-dev: Keep mobile terminal above keyboard

• Make mobile layout content-resizing explicit so browser and PWA terminals end above the on-screen keyboard.
• Track visual viewport panning even when only its offset changes.
• Reveal the exact terminal cursor row on input instead of scrolling the entire terminal canvas to its bottom.

v9.18.22-dev: Stabilize mobile keyboard viewport

• Keep content-resized Chromium layouts anchored while keyboard focus emits transient visual viewport offsets.
• Retain the visual viewport offset fallback for iOS and browsers that keep a larger layout viewport.
• Preserve the zero-overlap keyboard boundary without whole-shell movement during terminal input.

v9.18.23-dev: Stop mobile terminal input reshuffling

• Keep the app shell fixed while focused terminal or prompt input emits offset-only mobile viewport panning.
• Stop direct xterm keystrokes from forcing a cursor-scroll cycle before terminal output is rendered.
• Coalesce cursor reveals after rendering and write scroll position only when the cursor is actually outside the visible terminal.

v9.18.24-dev: Restore dark sidebar contrast

• Start new browser origins in the tuned dark theme without cross-port theme leakage
• Keep high-contrast sidebar colors when switching away from Solarized themes
• Store UI theme per origin so stable and source instances stay isolated

v9.18.25-dev: Keep browser sessions securely alive

• Keep active browser sessions alive with an eight-day sliding window and background renewal, while requiring the password again after more than eight days away.
• Enforce the same session lifetime across HTTP APIs and every full-user control WebSocket, including immediate revocation on logout or password change.
• Recover expired authentication through one login flow instead of leaving terminal steering active while uploads or History fail independently.
• Preserve one logical session identity across renewals and migrate existing cookies without forcing an upgrade-time login.

v9.18.26-dev: Fix History dropdown reliability

• Keep session History open during internal scrolling and scrollbar gestures.
• Distinguish connection or certificate failures from a genuinely empty timeline and provide an inline refresh action.
• Refine the History dropdown layout, placement, timeline density, and touch targets without changing global theme colors.

v9.18.27-dev: Attach History to its top-bar action

• Remove the redundant History heading inside the session timeline dropdown.
• Align the dropdown with the History tab and reduce the vertical gap to two pixels.
• Preserve internal scrolling, existing theme colors, and established action sizing.

v9.18.28-dev: Shelve the unfinished Operator surface

• Remove Operator from the sidebar until its product requirements are reassessed.
• Stop the dormant Operator notification poll from reopening the withdrawn surface.
• Keep the deterministic control-plane API and mt CLI contracts intact for agents and future redesign.