# Agent Workflow

## Parallel Work With `wt`
- Start with `wt --version` and `wt list`.
- Create the task path with `wt path --create <branch>`.
- Work only inside the returned path.
- Keep file ownership clear. If two agents need the same file, one should finish or hand off before the other edits it.
- Use `wt cleanup` or `wt prune` only after previewing what will be removed.

## Branch Naming
- `feat/<topic>` for new behavior.
- `fix/<topic>` for bug fixes.
- `docs/<topic>` for documentation-only changes.
- `refactor/<topic>` for structure changes without intended behavior changes.
- `chore/<topic>` for maintenance or tooling.

## Standard Development Loop
1. Sync the branch context and inspect `git status --short`.
2. Implement the smallest coherent change.
3. Run `make fmt`.
4. Run `make fix`.
5. Run `make test`.
6. Run `make test-integration`.
7. Run `make test-e2e`.
8. Update the maintained test list below if behavior or coverage expectations changed.
9. Prepare review notes with parity status, commands run, and remaining risks.

## Maintained Test List
- `make fmt`: repository formatting for Go, shell snippets, and generated docs where applicable.
- `make fix`: safe automatic fixes such as `go fix` and repository-approved cleanup steps.
- `make npm-pack`: local npm binary package staging and `npm pack --dry-run` for the root package plus platform packages.
- `make test`: fast unit coverage for app-layer AI split native agent launch/selective popup-toggle/settings/status/notification parity including AI pane option metadata, watcher metadata bootstrap for existing panes, capture-backed reply detection, missing-pane watcher shutdown, armed focus-only reply badge clearing, busy attention preservation on focus clear, manual AI topic preservation while watcher status still updates, agent-labeled desktop notification message context with pane-title-first body text, global/project-local lifecycle hook dispatch for post-create/pre-create/post-attach/send-noti with project hook and `.projmux/config.toml` trust-store hashing plus env/settings kill-switch gating, declarative startup command and hook run coverage, `send-noti` stdin JSON delivery plus `PROJMUX_NOTIFY_*` env payload, notify queue write success/failure/depth-guard dispatch rules, notify/statusbar/sidebar origin-client focus routing, project config env/kube session environment application, Settings project config env/kube/startup form writes with trust-store refresh and preserved hook commands, startup command send-keys orchestration plus startup pane replay markers, pre-create abort behavior, and shared projmux notification icon paths, and scoped even row/column resizing after shell and agent splits, status-bar git/kube segment parity including muted git branch block styling and compact dirty/staged/ahead/behind state colors, statusbar pwd display-only native-framed path popup with shared popup-wait-key/no-extra-payload-line command coverage, no clipboard or tmux buffer copy, and popup-wait-key cursor/raw-mode restore coverage, statusbar usage native HUD popup alignment/height-budget/threshold palette/muted sync-staleness/fallback coverage without raw CLI popup or popup-toggle stacking, statusbar settings click popup fallback and settings chip right-edge rendering without default trailing space, popup-toggle stale marker recovery, isolated `projmux shell` tmux app launch/config generation including home fallback plus project-context default session targeting from `PROJMUX_CWD` or nearest project marker, app-owned project-name statusbar layout, distinct project badge color, and quiet debounced session-state autosave command/app-config trigger, shell-entry welcome release prompt and inline update handling, shell update skip-by-latest-tag behavior plus best-effort stale-cache refresh, pane/window keybindings, keymap.toml tmux override rendering/stale unbinds including retired direct/UserKey cleanup, Settings Keybindings root/list/detail capture flows including parse-error rows, unsafe raw capture and timeout guards, disable/reset writes, app config regeneration, live tmux source-file reload, no-live-tmux save behavior, and stage-by-stage apply recovery copy, window rename bindings, pane rename helper/binding, pane-exit rebalance command/hooks, hook-pane and after-select-pane based attention focus hooks, attention badge toggle/clear/list/window rendering, attach/current/kill/pin/preview/prune/sessions/session-popup/settings commands, switch, tag, tmux helper commands, update status/check/apply cache and installer detection including GitHub Release binary asset selection/extraction/replacement, doctor install-missing command selection, AI notify integration diagnostics, and Session State resume metadata diagnostics, Settings AI notify integration diagnostics read-only status/conflict/CLI guidance, and Settings About update status/check action wiring, untitled standalone popup-toggle marker close/config install, direct popup minimum sizing, AI picker minimum width and height, sidebar minimum width and compact badge spacing, preview select writes, popup render output after cycling, switch picker pin action behavior without inline settings rows, nested settings hub sections for AI defaults, project picker filesystem scan/pin actions, Project Root settings source/shadowing/set/current/clear flows, app/keybinding info including Ctrl-M rename forwarding, and About version/source rendering, switch picker focused-session kill, switch picker launcher-key abort bindings, switch explicit project-root, unconfigured-root, and weak managed-root heuristic parity, switch popup hiding new-session candidates while sidebar keeps create-capable rows, switch row project-name display with `~` pinned to the top and live-session-first sorting, pretty-path, preview-context including kube context/namespace, switch settings subcommand flows including add-current-pin, interactive add-pin picker, and settings label/preview polish including Phase 2 Settings/hookmaker/project-startup/trust/quit destructive row color regression strings, native preview wiring, baseline picker surface parity including prompt/footer/header fallback without app-name filler and search-key scoped card matching, sidebar compact action-only key footer, sidebar preview-window/start-position behavior without focus-time session switching, sidebar row/window ANSI styling with pane-aggregated attention badge state and AI topic labels, Alt+2/Alt+3 legacy popup row, preview-window, pane metadata, and pane-snapshot parity, switch read0 card rows with active/inactive title styling, right-side status badges, combined directory/git metadata with muted inactive branch styling, statusbar-matched block window tabs with window attention badges, read0 expect-key action parsing, restored pin/tag card badges, and restrained selected-row marker styling, switch preview metadata without duplicated directory/git rows, preview metadata rendering, popup pane display names for AI agents, AI topics, and shell commands, switch preview cycle bindings, sessions picker preview/cycle/open/kill wiring including attached-session fallback behavior, sessions picker launcher-key abort bindings, popup/switch preview summary formatting, popup sessions tmux entry helpers, switch/popup/session rendering, session identity, session-state Claude/Codex/Antigravity resume and declarative startup replay, session snapshot capture/autosave recipe classification including save/autosave pre-capture resume metadata refresh from live AI session ids including Antigravity conversation ids, Claude transcript paths, and Codex rollout log cwd matching/ambiguity skips, candidate discovery, config path derivation, popup preview read-models, and pure state rules including preview, tag, and lifecycle stores.
- `make test` also covers Settings > AI Settings > Enabled agents Phase 0 config behavior: missing config enables Claude, Codex, and Antigravity, unknown saved provider names are ignored without disabling known providers, Settings toggles persist Claude/Codex/Antigravity only, shell/selective are absent from enabled-agent rows, and a saved default split mode warns when its provider is disabled.
- `make test` also covers native Alt-1 sidebar `Sidebar:KillSession` mutable refresh: the action kills through the focused-session safety path, keeps the native picker session open, refreshes rows and preview with `picker.Action.Mutate`/`DeferredUpdate`, and preserves the previous-live-session guard.
- `make test` also covers Notify sidebar pane-grouped read-model rows and interactions: collapsed pane inbox group construction, fixed three-line group cards with stable project/provider, topic/context, aggregate metadata, and latest-preview slots including topic-with-project cases, child-count badges that match expandable child rows without rendering `+0`, childless group headers without strong fold affordance, selected/expanded marker-only row shape changes, duplicate label/preview reduction, worst-severity aggregation, inactive/gone group display and child-count rendering, pane-less fallback grouping, compact newest-first child event rows with warn/critical severity preservation, Right/Left fold mutation plus childless Right no-op refresh, folded and expanded live group Enter focus+ack with mixed-severity critical rows, inactive-but-routable group Enter focus+ack, gone group Enter cleanup without focus including critical rows, target-gone race cleanup, transient focus-failure no-ack refresh, child Enter focus/ack preservation, explicit group acknowledgement including mixed-severity critical rows, and grouped deferred refresh output with expanded-state pruning.
- `make test` also covers the AI provider metadata registry for Claude/Codex/Antigravity launch providers: registry-derived enabled-agent defaults and ordering, Settings enabled-agent rows, AI picker visibility for disabled providers, ambient usage model scope derivation for quota-supported providers, hook diagnostic provider metadata, Antigravity session-state support metadata, and explicit diagnostics for disabled providers without adding unsupported quota adapters.
- `make test` also covers usage HUD/all-model filtering from Settings > AI Settings > Enabled agents: ambient `status usage` and `usage --model all` scope collection/rendering to enabled Claude/Codex providers, all-disabled all-model output shows a Settings fallback without refreshing adapters, disabled cached rows/backoff do not leak into ambient output, and explicit `usage --model claude|codex` still collects/renders the requested provider even when disabled.
- `make test` also covers AI semantic badge renderer aggregation for window-list, sidebar rows, switch window tabs, popup pane summaries, and pane-border topic badges using prompt-required > response-complete > in-progress priority while preserving blank no-state lanes, response-complete live badge consume on attention clear without idling action-required/progress badges, plus Settings > Appearance AI badge style selection for dot/emoji/off pane-border, Alt-1 sidebar window/preview tabs, and tmux window-status compatibility with dot as the persisted/config fallback.
- `make test` also covers AI semantic badge Phase 3 theme-role hardening: `@projmux_ai_badge_kind` storage values and aggregate priority stay unchanged, `minimal` remains a read-time alias for the `off` badge style, progress/success/action-required badge roles stay distinct, permission/input status badges do not use critical red, and critical notify queue severity does not drive live AI status badge colors or desktop notification urgency.
- `make test` also covers keybinding surface tier catalog rules, action-centered `keymap.toml` `keys = [...]` multi-alias parsing/writing, quoted internal `Surface:Action` tables, legacy popup action ID aliases, canonical popup toggle names, AI split popup-vs-direct action labels, generated tmux config multi-alias rendering, global/direct conflict detection, surface-scoped native picker command conflict detection, Settings Keybindings list/search/detail surface-aware picker-local labels, compact action-list state copy, flat Keys list/action detail rows, key detail remove/test rows, Add key default press-key flow with Advanced typed entry, collapsed Troubleshooting entry copy, Settings delivery diagnostics that split logical key/raw bytes/tmux received key while distinguishing missing, ambiguous, adapter-needed, and delivered states, safe direct key pool and risky/reserved diagnostic-only copy, Projmux-owned Ghostty/Windows Terminal advanced delivery copy, raw escape/CSI-u/xterm modified/UserKey/UserSequence rejection from primary keymap storage, Labs compatibility redirect to the Keybindings root, capture/add-key flows, unsafe raw capture, reset behavior, stale guide docs guards, and welcome/runtime footer copy that avoids hardcoded launch-key guides.
- `make test` also covers welcome revisit policy: legacy welcome state remains readable without suppressing shell entry, Enter continues without storing release skip, `s` stores an update skip for the current latest tag when an update is available, source installs show disabled Upgrade guidance, stale update cache refresh is best-effort, Settings > About > Welcome opens a Settings-native viewer without pending state, and shell prompt display does not schedule a redundant attach popup.
- `make test` also covers transport-dependent app tmux defaults for pane/window navigation (`M-Left`/`M-Right`/`M-Up`/`M-Down` and `M-S-Left`/`M-S-Right`) while keeping visible default chords, allowing additive safe plain aliases that do not store or remove the transport defaults, and no UserKey/CSI-u generated fallback.
- `make test` also covers direct `projmux ai split --agent <claude|codex|antigravity|shell|selective>` launches, enabled-agent gating for disabled direct launches and disabled saved defaults, `--force-agent` as an explicit direct CLI-only override, selective picker filtering with all-disabled shell fallback guidance, config-default preservation, extra args appended to resolved agent executables, managed pane metadata, title watcher startup, layout application, plain shell split behavior, selective picker delegation, invalid direct-agent usage errors, and regressions that direct concrete-agent and saved-default splits create a new pane without probing existing AI pane metadata or selecting an existing pane, including when launched from the current AI pane.
- `make test` also covers Settings IA regression guards for `send-noti` visibility in Hooks, no nested Project recipe inside Hooks, Project recipe/AI/Labs view-first detail rows, Appearance Path/Git/Notify icon direct off/symbol/emoji preview selection with no Change page, Notifications root/Desktop notifications/Delivery sources relocation, localized Korean Desktop notifications root/detail chrome without visible English residue, Delivery sources command-row clipboard copy, and Labs Project Hooks overview-first rows.
- `make test` also covers AI desktop notification dedupe precedence (env override > Settings saved value > default), Desktop notifications mode persistence through `desktop-notify-mode`, saved-config precedence over live tmux options, `projmux tmux apply` regeneration of `@projmux_desktop_notify_mode`, configured dedupe-window collapse/send behavior, Settings > Notifications AI dedupe preset/custom rows, explicit notify focus consume rules for selected critical rows and older same-pane non-critical AI cleanup, preservation of critical/permission/stop-failure/external/git/k8s rows during bulk cleanup, OS Toast click-to-focus queue consume, WSL Toast protocol handler hidden-launcher registration with `wsl.exe --exec` URI forwarding, and attention clear paths that do not ack the queue.
- `make test` also covers AI hook runtime action precedence over catalog defaults, runtime quiet for known Codex notify events, runtime notify for known Claude quiet events, generic in-app-only notify rows for known Codex hook events without specialized handlers, suppression of desktop notification and `send-noti` dispatch on that generic path, separation of runtime hook action from catalog install events, Settings > Notifications hook quiet policy display/write behavior without external install/remove execution, hook desktop notification payload parity with the in-app queue text across the shared OS notification payload, normal/transient OS urgency and expiration for critical AI queue rows, and dormant title/capture fallback gating once a pane is hook-active.
- `make test` also covers Settings > Session State as global settings-only UI with default-off auto-save, Sidebar startup picker relocation/compatibility, and no window/pane tree, Settings > Project > Session State project-derived identity plus project auto-save override/effective source rows and distinct Save latest snapshot / Save named snapshot labels, closed-project save disabled reasons, named snapshot portable path conversion, project/global auto-save precedence, Projects > Sessions > State read-only latest/named snapshot overview with window/pane cwd/recipe/agent-resume health, user-facing `projmux session-state` status/save/delete/restore dry-run actions including explicit manual save bypass of disabled autosave and agent resume status/confidence preview, and Project open sidebar startup coverage for Session State opt-in `Start project`, default-off empty creation, Latest snapshot, Named snapshot, Empty session, Back, saved-at row metadata, existing-session skip, startup-before-trust ordering, detached sidebar open continuation before client-scoped separate trust popup handoff without sidebar inline trust UI, trust approve continuation, and trust deny/cancel no-session sidebar refresh behavior.
- `make test` also covers `projmux shell` usage without startup selector flags, project-context default target lookup from `PROJMUX_CWD` or nearest project marker, explicit `--session` separation from project-derived defaults, and direct empty attach behavior without shell startup picker/replay.
- `make test` also covers app tmux naming metadata policy: pane border and automatic window rename share the visible pane label expression, AI topic panes feed window tab labels through `@projmux_ai_topic`, shell panes prefer the visible shell command label such as `zsh`, and `projmux shell` disables program-driven window renames while keeping automatic rename enabled.
- `make test` also covers manual Session State Save snapshot and restore dry-run preview actions, title-first pane preview labels with legacy snapshot fallback, missing-snapshot messaging, and the absence of the removed statusbar State shortcut.
- `make test` also covers legacy named-snapshot storage compatibility for `.projmux/layouts/*.toml`, supported interpolation validation, malformed-file list warnings, portable conversion helpers, dry-run conversion to the session-state restore preview with source labels, missing current-session failure, destructive live replay helper behavior with fresh/internal source marking and fresh saved-snapshot cleanup, and the session-state live replay helper that stages windows, moves them by tmux ID, and removes extra live windows.
- `make test` also covers `projmux ai integrate codex` default hooks install/idempotence/dry-run/removal, compatibility legacy Codex notify mode install/idempotence, dry-run preview, unmanaged `notify = ...` conflict refusal, managed-block removal, catalog-driven Codex hook event installation with local override merging, nested inline Codex hook schema, `[features]` merge/preservation, preservation of unrelated Codex/Claude config and unmanaged hook entries, Settings Codex `/hooks` review notice and tested-version rows, and remove-all behavior for projmux-managed Codex blocks.
- `make test` also covers `projmux ai ingest codex-hook` event parsing, PermissionRequest critical queue rows with tool/action metadata, Stop info queue rows, UserPromptSubmit busy/no-queue behavior, pane-level semantic badge kind writes that keep permission, response complete, and in-progress states distinct, quiet/no-notify diagnostics for non-firing Codex hook events including override-added catalog events, cataloged hook notification body formatting, hook-active pane marking, topic preservation without hook candidate writes, and mutable resume metadata writes for `@projmux_ai_resume_id`, source, and updated-at.
- `make test` also covers `projmux ai integrate claude` user-level Claude Code hook settings install/idempotence, dry-run preview, unmanaged projmux ingest command conflict refusal across all settings events, managed-command removal by marker even for stale events outside the current catalog, preservation of unrelated settings/hooks, catalog-driven Claude hook event installation with local override merging, and managed wiring for the 29 Claude Code 2.1.140 events in the embedded default catalog.
- `make test` also covers `projmux ai ingest claude-hook` core and extra Claude Code hook ingest for event parsing, transcript fallback, cataloged hook notification body formatting, permission summary formatting, UserPromptSubmit busy/no-queue behavior, Notification severity/text mapping, pane-level semantic badge kind writes for permission, input, response complete, and in-progress states, StopFailure/TeammateIdle text/severity/metadata mapping, SubagentStop quiet/no-notify diagnostics, unknown future-event quiet fallback, hook-active pane marking, topic preservation without hook candidate writes, mutable resume metadata writes for `@projmux_ai_resume_id`, source, and updated-at, and Claude transcript path preservation.
- `make test` also covers the Globalization Phase 0 English baseline for AI desktop notification summaries/bodies and hook-ingest queue text while preserving agent names, tool names, commands, paths, and provider payload values as literals/data.
- `make test` also covers the Globalization Phase 1 message catalog foundation: locale resolver priority and normalization, `ko-KR` to `en-US` fallback, missing fallback-key errors, `en-US` completeness for foundation keys, and plain-text versus ANSI/tmux-styled fragment API separation.
- `make test` also covers the Globalization Phase 2 formatter foundation: compact/full relative age and duration formatting, locale-specific just-now text, notification count plural/count preservation, list joins that preserve payload items, status token and target label localization, terminal cell-width measurement/truncation, and ANSI/tmux style wrappers treated as zero-width.
- `make test` also covers the Globalization Phase 3 notify runtime migration: AI notify category rendering for `en-US`/`ko-KR`, Codex/Claude hook literal preservation for agent names, tool names, commands, paths, URLs, provider messages, subagent and teammate payloads, desktop notification and in-app queue display parity, notify sidebar/statusbar locale formatter output, and raw queue storage schema preservation.
- `make test` also covers statusbar notify width fallbacks that preserve normal INFO/WARN/CRIT badges at readable widths, use dotless clipped text/count at very narrow widths, and keep hard truncation closed with `#[default]`.
- `make test` also covers the Globalization Phase 4 Settings and popup guidance migration: `en-US`/`ko-KR` Settings root title/chips/rows/footer rendering, native picker search/empty/footer rendering without overflow, Settings row padding by terminal cell width, shell welcome guide catalog rendering, and long Korean ANSI/tmux-styled guide truncation safety while preserving key/command/path literals.
- `make test` also covers the Globalization Phase 5 locale settings surface: `PROJMUX_LOCALE` > global `[ui].locale` > `LC_ALL` > `LC_MESSAGES` > `LANG` > `en-US` priority, Settings > Appearance > Language / Locale row/detail visibility, `auto` current-locale/source display, unsupported locale fallback warnings, global config writes, and preserved command/config/env/path literals.
- `make test` also covers the Globalization Phase 6 governance guard: Go string-literal audit classification for hardcoded Korean candidates, English user-facing candidates, and ignored literal/data/debug examples; no unapproved runtime Korean literals outside catalog/formatter/test fixtures; `en-US` coverage for every embedded default catalog key; and required `ko-KR` coverage for migrated notify, Settings, picker, welcome, update, and help surfaces.
- `make test` also covers `projmux ai integrate tmux-bell` dry-run/install/remove tmux command planning, managed `alert-bell` hook append/idempotence/removal, preservation of unmanaged bell hooks, and `projmux ai ingest bell --pane` queue push/metadata/dedupe behavior for non-AI-managed panes.
- `make test` also covers `projmux ai ingest log` tail/path rendering and bounded JSONL log trimming for ingest diagnostics.
- `make test` also covers welcome revisit policy: legacy `skip_version` readability without shell suppression, `s` Skip until next vs Enter continue, Settings > About > Welcome native viewer, best-effort shell update cache refresh, and attach-popup no-duplicate/no-op behavior.
- `make test` also covers `projmux quit` action-picker rows, cancel/close no-op behavior, explicit quit of only app-owned mux runtimes marked by `@projmux_app=1` on the selected `tmux`/`psmux -L projmux` backend, missing/default runtime no-ops, dispatcher wiring, and `Settings > About > Quit projmux` routing through the same picker before any shutdown side effect.
- `make test` also covers the built-in semantic palette foundation: non-empty fallback truecolor/tmux tokens, distinct action/attention/AI/progress/danger roles, native picker chip/current/titlebar render strings including titlebar frame background/foreground inheritance without separate overlay ANSI, statusbar git/notify/usage/settings palette regressions, attention/pane-border/popup/switch progress color guards, renderer-only lead-mode topic prefix styling, settings/trust/destructive row color guards, global-only theme resolver behavior for `global`/`fallback` source labels (project `[theme]` is not a source), preset fill, explicit token override, unknown-preset/invalid-color warnings that ignore only the global layer, and truecolor-to-tmux mapping, semantic role map (`RenderRoles`/`ANSIRoles`) fallback byte-identity against the historical palette literals plus explicit-theme repaint of Tier A/B chrome/state roles while Tier C renderer-only literals stay fixed, Phase 6 public token (`progress`/`success`/`action_required`/`pane_active_bg`/`focus`) repaint of the tmux and ANSI roles with `action_required` kept independent of `critical`, Phase 6b pane-body-vs-popup background separation where an explicit `background` repaints the inactive pane body but not popups and an explicit `surface` repaints popups but not the pane body, native popup-toggle `display-popup -s` body style propagation from the effective theme without touching global popup/shell/status styles, and Settings global theme editing with the merged Global/Effective view and no project theme editor or font keys.
- `make test` also covers Recent Windows Phase 0 state/model behavior: server-scoped file paths, missing/corrupt state policy with corrupt-file backup, MRU newest-first recording, same-window dedupe and promotion, default queue limiting, current-window exclusion, cross-session candidate retention, gone-window pruning against live window inventory, and label fallback rules that keep win/pane ids as debug fallback instead of the primary row label.
- `make test` also covers Recent Windows Phase 1 native picker behavior: `projmux window recent` empty-state messaging, cross-session candidate picker rows with descriptive project/session/window/pane command age metadata, pane summaries mirroring visible pane labels with AI topic and known-shell command precedence, four visible pane cells before compact `+N` overflow, window-only switching without pane restoration, switch-failure refresh/prune handling, and gone-window pruning before picker selection.
- `make test` also covers Recent Windows Phase 2/3/4 keybinding, popup, and runtime recorder integration: `RecentWindows:Open` owns the guaranteed `M-3` launch default, generated tmux config uses client-scoped `tmux popup-toggle recent-windows`, the popup body runs `projmux window recent`, generated tmux config installs background `window record` hooks for window and client-session changes plus first-use population without `session-window-changed`, `window record` snapshots current tmux socket/session/window/active-pane metadata into the socket-scoped store with escaped field parsing, repeated same-window record fires dedupe instead of growing entries, the queue remains bounded by `recentwindows.DefaultLimit`, Settings > Keybindings shows Recent Windows with the `M-3` default, setup probe text names Recent Windows, `SessionPopupToggle` no longer owns the guaranteed `M-3` default, and escaped tmux field separators are parsed for current/list window metadata.
- Current focused unit coverage also includes strict notify SOT behavior
  (TTL does not remove rows, focus success and target-gone clicks ack,
  reconcile reports inactive `queue-stale` rows), `notify list --live` queue/live explanations, notify sidebar
  three-line grouped card rendering with child-count/fold semantics plus focus/ack/non-critical-clear/clear-all
  actions, notify/statusbar/sidebar attention-vs-AI palette assertions including muted inactive/gone rows,
  native picker-session-local `a` ack that refreshes the sidebar without
  focusing or restarting the picker, non-critical `x` bulk clear that preserves critical rows, empty
  state rendering after all visible non-critical rows are cleared, and notify queue-write refresh events
  that update an open native sidebar best-effort without failing queue pushes, and `focus` dispatch diagnostics for session fallback, unresolved
  targets, window fallback, pane fallback, explicit id failures as unresolved exits, and
  notify-only fallback.
- Picker focused unit coverage includes backend-neutral picker item/action mapping, native title-focused filtering, numeric selection, shared close actions including raw native custom actions, deprecated picker backend value normalization, AI picker title chrome and stable search-key ordering, Settings title chrome and root section order, Settings Labs shell without backend choices plus keybindings compatibility redirect, environment override normalization, compact multi-line metadata gutters with one-column-indented metadata, proportional native scrollbar thumb rendering, native row width clamps that preserve ANSI resets and Korean/wide-cell frame geometry with matched scrollbar/no-scrollbar row budgets including Settings > Appearance AI badge preview rows and parent long emoji preview rows, native app-background and semantic selected/muted/accent/warning/critical role coverage for fallback/effective themes across content padding, empty no-footer rows, footer rows, scrollbars, split-preview gaps, reset-to-padding continuation, and Korean Settings > Appearance AI badge style chips/prompt/emoji rows, multiline partial next/previous item row rendering with rendered-row scrollbar units, fixed split-preview and sidebar list viewports with scrollbar tracks, native up/down-family navigation wrap with empty-list safety and PageUp/PageDown/Home/End clamp regression coverage, native mouse down/follow-drag/release behavior, deferred native row updates that preserve filter/selection state and can repeat from event triggers, preview tab/control normalization before width clipping, optional native frame titlebars without same-line rule fill and with title/chip gap inheritance guards, titled native Alt-1 sidebar chrome, statusbar-preserving sidebar popup height, native-only compact project sidebar popup sizing, cheap Alt-1 first-paint rows with deferred git/window/attention/preview enrichment, fixed three-line Alt-1 sidebar row geometry across cheap/enriched paints, bulk switch existing-session classification with per-candidate fallback, and notify sidebar title/popup sizing.
- Doctor focused unit coverage includes native Windows psmux dependency policy, Windows `stty` skip behavior, Linux tmux required/stale behavior, and native Windows tmux bell fallback skip diagnostics.
- psmux focused unit coverage includes Windows native command rendering policy: PowerShell-generated config callbacks quote `projmux.exe` and argv without POSIX shell quoting, direct CreateProcess/C-runtime command-line rendering remains separate from PowerShell and `cmd.exe /c`, and paths/args containing spaces, quotes, backtick, dollar, ampersand, pipe, redirect characters, semicolon, parentheses, braces, caret, percent, and exclamation are pinned as data.
- psmux app/session foundation focused unit coverage includes `PROJMUX_MUX_BACKEND` and platform-default backend selection, psmux `-L projmux` session create/attach/switch/ephemeral marker command args, list-sessions/list-windows/list-panes minimal inventory parsing, selected-backend app command wiring, and the explicit absence of pane-scoped metadata in psmux inventory rows.
- psmux AI split MVP focused unit coverage includes right/down `psmux -L projmux split-window` command shapes with `-P -F "#{pane_id}"`, PowerShell-rendered plain shell and Codex/Claude command tails, psmux-scoped Windows runner lookup for Codex `.cmd`/`.ps1`/`.exe`/extensionless shims, Claude native-installer PATH guidance, unchanged tmux split behavior, and explicit psmux degradation for tmux-only pane metadata, watch-title, and split-layout follow-up calls.
- Shell focused unit coverage includes native Windows and explicit `PROJMUX_MUX_BACKEND=psmux` `projmux.exe shell` routing to `psmux -L projmux -f <generated config> new-session -A -s <session> [-c <cwd>]`, separate minimal psmux config generation with PowerShell-rendered callbacks, minimal psmux project-switch keybinding generation with psmux/native-picker env forcing, native line-mode fallback, explicit PowerShell `display-popup -E powershell -NoProfile -Command <script>` command tail, left-anchored sidebar-like popup geometry, explicit tmux override on Windows, and unchanged tmux/POSIX shell routing.
- `make test-integration`: Docker-backed Linux integration smoke with real `tmux`, `git`, and `stty`; covers `doctor`, tmux config print/install/apply, and notify queue CRUD against isolated HOME/XDG paths.
- `make test-install-smoke`: Docker-backed source install smoke; covers `make install`, atomic binary replacement, `tmux apply` against a live `projmux` socket, and post-install notify queue initialization.
- `make test-e2e`: Docker-backed real-tmux workflow smoke for session/pane setup, app config sourcing, reply-state notify reconciliation, focus notify fallback, and status notify rendering with contextual project/state/agent badges. Host-only terminal, WSL, macOS, and GUI notification behavior remains outside Docker; see [docs/testing.md](testing.md).

## When To Update This List
- A feature moves between unit, integration, and e2e coverage levels.
- A new subsystem introduces a new validation target or removes one.
- Behavior changes require new parity assertions or a different e2e scenario.
- A target stops being authoritative and must be replaced.

## Review Checklist
- The branch stays within its stated scope.
- The change preserves boundaries between portable `projmux` behavior and local machine policy.
- The required `make` targets were run in order.
- Test inventory updates are included when behavior changed.
- Known parity gaps are explicit.
