FEAT: schedule in-memory session follow-ups

[merefield]

Why

Make Sessions a more useful place to direct Codex work: prepare a follow-up for later or after quota recovery, steer or queue work during an active turn, and retain enough prompt/reply context to understand what is happening. Scheduling is explicit and structured, without natural-language parsing or a durable background service.

This describes the final changes relative to main, not the sequence of intermediate implementations.

1. Scheduled follow-ups — terminal and writable web

• Add one in-memory scheduled follow-up per session, triggered by quota recovery, a delay in hours/minutes, or a calendar date and local time. Existing immediate follow-ups remain available.
• Provide review, edit, delete and separately confirmed Send now actions, with timing/timezone previews, validation and waiting-state explanations.
• Show TRIGGER SET instead of TURN COMPLETE for an otherwise completed session with a pending trigger. Working and attention-needed states retain priority. The lowest-priority terminal trigger pill and session label open detail; dismissed rows retain access through their trigger pills.
• Use the same UI-independent scheduling queue for terminal and writable web mode. Read-only web mode cannot create or access scheduled prompts.

2. Active-turn controls and a unified follow-up queue — terminal

• Allow typing during WORKING in full detail and the selected wide row when space permits. With the composer focused, Enter steers, Tab queues the next message, and Esc requests interruption; when idle, Enter sends an immediate follow-up. State transitions never automatically submit a draft.
• Add a FOLLOW-UPS panel above the composer or ordinary approval controls, combining Codex-owned native queued messages and Codexometer's scheduled triggers. Quota-threshold reviews remain isolated.
• Support queue browsing with the mouse or Alt+Q, arrow/Page keys, and edit/delete controls. Native deletion and scheduled Send now require confirmation. Editing or deleting native messages uses their original identity/content and does not recreate messages that have already started.
• Refresh native queue state while selected, react to queue-change notifications, show acknowledged submissions immediately while reconciling with the server, and disable stale queue actions after failed reads.

3. Clearer live context and retained drafts

• Show the observed CURRENT TASK and separate LATEST GUIDANCE during a turn; retain the task above the completed reply until the next turn. Compact rows prioritise reply text when space is limited.
• Display bounded live reply deltas as REPLY // STREAMING, keeping commentary distinct from final-answer text. Completed messages replace partial text; terminal scrolling follows new text only when already at the bottom. Web receives the same live context through its normal refresh.
• Preserve ordinary terminal composer drafts per session and between wide-row/full-detail views without sending or automatically focusing them. Secret/question answers and in-flight submissions are excluded.
• Make the short session ID and name prominent in the full-detail border and composer heading, and consolidate working animation near the composer.

4. Responsive, consistent terminal forms

• Embed scheduling and native queue editing inside the detail pane instead of replacing the dashboard. Scheduling keeps the composer anchored while the form scrolls and follows keyboard focus.
• Keep dashboard tabs, attention pills and footer controls usable during scheduling; retain unsaved form edits when navigating away. Explicit Back/Esc cancels an edit without changing the saved job.
• Give controls consistent hover/focus feedback, distinguish selected trigger type from keyboard focus, and derive mouse hit areas from rendered label widths. Remove duplicate focus instructions.
• Support keyboard field/action navigation, calendar day/week/month movement and numeric time entry. Small panes retain the composer/footer; confirmation is blocked when there is insufficient room to review it.
• Localise scheduling, queue controls, validation and trigger-status text across all 17 supported languages. Non-English calendars use numeric month/date formats and localised weekdays.
• Add subtle theme-coloured composer and queue backgrounds. Update the README, intro post and bundled web assets for the resulting behaviour.

5. Reliability, performance and dependency maintenance

• Guard scheduled dispatch with fresh quota, account identity, coverage of previously observed windows, an authoritative idle capability and pending-review checks. Manual and automatic sends share an atomic claim; edits invalidate older confirmations.
• Retain uncertain outcomes for inspection without automatic retries. Known local preflight deferrals remain pending, and completed jobs are pruned before accepting new work.
• Reduce repeated terminal layout/attention calculations and editor state copying, preserving value-model isolation through copy-on-write widget updates. Add performance/regression coverage without removing behaviour checks.
• Update the frontend source-map-js dependency from 1.2.1 to 1.2.2.

Scope and limitations

• Scheduling and live controls require supported connected shared app-server capabilities; local-only observations cannot provide them. Active-turn steering/interruption and native queue management are terminal-only in this PR; writable web retains idle follow-ups, approvals/questions and adds scheduling.
• Codexometer schedules and drafts are memory-only: exiting cancels them. Closing a browser tab does not stop a running web server's schedules. Native queued messages belong to Codex and may survive Codexometer exiting.
• All reported quota windows must have capacity, which can conservatively wait on a bucket unrelated to the selected model. A predicted reset time alone is not proof of recovery. No reset credits are redeemed automatically.
• Scheduled work can run late while a session is busy/unavailable or after resume. Selecting quota recovery when quota is already available runs at the next eligible opportunity.
• Requests use the session's model/reasoning/speed settings at dispatch. No model overrides, recurrence, natural-language time parsing or disk persistence are added. Native queue editing has no backend compare-and-swap guarantee; avoid simultaneous edits from multiple clients.
• Streaming/task context depends on observed events; missed history is not reconstructed. Existing bounded-text and local completed-message fallbacks remain.

Verification

• Latest local checks passed: go test ./internal/ui ./internal/i18n -count=1, go vet ./internal/ui ./internal/i18n, and git diff --check.
• Targeted race tests passed for scheduling, queue editing and form navigation. Regression tests exercise rendered hit areas in all 17 locales, responsive layout, hover, navigation/draft retention and confirmation safety.
• The PR also adds scheduling/dispatch, native queue/turn API, streaming-context, HTTP and browser regression tests. Full-suite/CI results should be read from the checks on the current head rather than inferred from earlier local runs.
• Local binary rebuilt for review. No release or version bump in this PR.

[Copilot]

Copilot review overview

🟡 Changes recommended

Trigger navigation and several terminal scheduling statuses do not yet match the documented behavior and localization requirements.

Review effort: Balanced
Findings: 4

Open (4)

• Localize trigger status text through i18n · New
• Localize small-pane scheduling control label · New
• Localize hard-coded trigger attention pill · New
• Add schedule edit query to trigger link · New

What changed in this PR

Adds in-memory scheduled follow-ups, active-turn controls, queue management, and richer live session context across terminal and writable web modes.

Changes:

• Introduces guarded scheduling and native follow-up queues.
• Adds streaming task/guidance context, draft retention, and responsive terminal forms.
• Updates localization, tests, embedded web assets, and source-map-js.

File	Description
web/​src/​state.svelte.ts	Extends web state and control actions.
web/​src/​Sessions.svelte	Displays triggers and live context.
web/​package-lock.json	Updates source-map-js.
intro-post.md	Documents scheduling behavior.
internal/​web/​state.go	Projects trigger and streaming state.
internal/​web/​server.go	Registers scheduling collection and API.
internal/​web/​schedules.go	Implements web scheduling dispatch.
internal/​web/​dist/​index.html	References rebuilt frontend assets.
internal/​web/​control.go	Adds schedule control requests.
internal/​web/​control_test.go	Tests live-context projection.
internal/​ui/​view.go	Initializes render geometry caching.
internal/​ui/​monitor.go	Adds trigger badges and identities.
internal/​ui/​monitor_turn_test.go	Tests active-turn controls.
internal/​ui/​monitor_summary.go	Adds trigger attention and layout caching.
internal/​ui/​monitor_stream_test.go	Tests streaming context behavior.
internal/​ui/​monitor_schedule_toggle.go	Implements scheduler toggle geometry.
internal/​ui/​monitor_schedule_toggle_test.go	Tests toggle interaction.
internal/​ui/​monitor_schedule_panel.go	Implements saved-trigger actions.
internal/​ui/​monitor_schedule_pane.go	Implements responsive schedule pane.
internal/​ui/​monitor_schedule_pane_test.go	Tests pane layout and retention.
internal/​ui/​monitor_queue_style_test.go	Tests queue styling and geometry.
internal/​ui/​monitor_prompt_test.go	Tests composer presentation and drafts.
internal/​ui/​monitor_name_test.go	Tests session identity display.
internal/​ui/​monitor_form_controls.go	Defines form hit-testing helpers.
internal/​ui/​monitor_form_controls_test.go	Tests localized form controls.
internal/​ui/​monitor_efficiency_test.go	Covers copy-on-write and caching.
internal/​ui/​monitor_editor.go	Makes editors copy-on-write and themed.
internal/​ui/​monitor_detail.go	Adds task and guidance sections.
internal/​ui/​monitor_detail_activity.go	Integrates queues and schedule controls.
internal/​ui/​monitor_context.go	Adds streaming titles and detail routing.
internal/​ui/​monitor_context_modes.go	Retains drafts and prioritizes replies.
internal/​ui/​monitor_context_modes_test.go	Updates detail-status expectations.
internal/​ui/​model.go	Integrates scheduling, queues, and caching.
internal/​ui/​localisation_test.go	Exercises localized interaction surfaces.
internal/​schedule/​quota.go	Defines quota dispatch guards.
internal/​schedule/​queue.go	Implements the in-memory schedule queue.
internal/​schedule/​queue_test.go	Tests scheduling safety and concurrency.
internal/​i18n/​locales/​zh-Hans.json	Adds Simplified Chinese strings.
internal/​i18n/​locales/​tr.json	Adds Turkish strings.
internal/​i18n/​locales/​sv.json	Adds Swedish strings.
internal/​i18n/​locales/​ru.json	Adds Russian strings.
internal/​i18n/​locales/​pt-PT.json	Adds Portuguese strings.
internal/​i18n/​locales/​pt-BR.json	Adds Brazilian Portuguese strings.
internal/​i18n/​locales/​nl.json	Adds Dutch strings.
internal/​i18n/​locales/​nb.json	Adds Norwegian strings.
internal/​i18n/​locales/​ja.json	Adds Japanese strings.
internal/​i18n/​locales/​it.json	Adds Italian strings.
internal/​i18n/​locales/​fr.json	Adds French strings.
internal/​i18n/​locales/​fi.json	Adds Finnish strings.
internal/​i18n/​locales/​et.json	Adds Estonian strings.
internal/​i18n/​locales/​es.json	Adds Spanish strings.
internal/​i18n/​locales/​en-GB.json	Defines new localization keys.
internal/​i18n/​locales/​de.json	Adds German strings.
internal/​i18n/​locales/​da.json	Adds Danish strings.
internal/​codex/​session_turn_unix.go	Implements active-turn mutations.
internal/​codex/​session_turn_unix_test.go	Tests turn protocol safety.
internal/​codex/​session_stream_test.go	Tests streaming event aggregation.
internal/​codex/​session_queue.go	Defines native queue APIs.
internal/​codex/​session_queue_unix.go	Implements native queue operations.
internal/​codex/​session_queue_unix_test.go	Tests queue reads and mutations.
internal/​codex/​session_prompt.go	Exposes active-turn capabilities.
internal/​codex/​session_prompt_unix.go	Tracks active turn lifecycle.
internal/​codex/​session_context.go	Extends session context fields.
internal/​codex/​session_context_test.go	Updates context lifecycle coverage.
internal/​codex/​session_context_daemon.go	Aggregates tasks and streaming deltas.
internal/​codex/​live_usage.go	Retains same-turn task context.
internal/​codex/​daemon_status_unix.go	Tracks native queue revisions.

Files not reviewed (1)

• web/package-lock.json: Generated file

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