Print boards and cards with configurable components and named print profiles

⌘P had no story: KanbanApp removed the platform's Print row outright on
11-command-nexus.md's "No Print story in v1 (⌘P unused)" line. That line
retires. File ▸ Print… now prints the board in front — lanes left to right,
each lane's cards top to bottom, as a linear document rather than a picture
of the strip — or, from a card window, that card. The trash is unreachable
by construction: it is a sibling container of `lanes`, not a lane.

The rules live in a pure layer nothing AppKit can reach. `PrintOptions` is
one Codable value carrying the printing card's five bullets — which
components (title, icon+labels line, rendered body, comments off by default
with either reading order), page breaks, one base face and size every other
size derives from, and a toggleable running head and foot. `PrintSource` is
what is being printed, frozen at ⌘P so the panel's repeated relayouts and a
board reloading underneath cannot disagree. `PrintDocumentBuilder` turns the
pair into a block list, which is where every decision a rendered page hides
becomes something a test can hold: component order, comment ordering, and
page-break markers that are markers rather than whitespace. Empty is empty
all the way up — a card with nothing to print consumes no page break, and a
lane whose cards all dropped out takes its heading with it.

A page break is a pagination fact, not a spacing one. TextKit has no
page-break character, so `PrintDocumentView` splits the document into
sections at its breaks and flows each into as many page-sized text
containers as it needs: a container boundary *is* a sheet boundary, at any
paper size with any margins. Bodies come from the app's one Markdown pass —
`BodyMarkup.parse` into `BodyMarkupRenderer` — re-faced run by run so the
chosen family reaches the text and fixed-pitch code keeps its own, and drawn
under a forced light appearance so the card window's dynamic label colours
do not print white.

Options ride in the print panel's own accessory rather than a pre-flight
sheet of ours, which buys the system's live preview of the real paginated
document; the preview refreshes through one KVO revision counter rather than
thirteen mirrored properties. Profiles persist app-side in UserDefaults,
never in board files — a print profile is how this user likes to read, not
what a board is (`BoardZoomStore`'s argument). A name is a profile's
identity, folded case-insensitively; "Last Used" is reserved in every
spelling, kept out of the stored list, and captured when an operation
actually ran, so a cancelled print rewrites nothing. Both decoders are
total: one unrecognized key must not cost a user every profile they saved.

DESIGN/11-command-nexus.md gains the Print row and loses the sentence
saying it would never have one.

Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy

DESIGN/11-command-nexus.md

@@ -32,6 +32,7 @@ The single source of truth for **every command and action the app can perform**
 | File | Add Comment | — (no default) | Card window (all tiers — 12); if Show Comments is off, turns it on (persisted, the same user choice) and focuses the composer — 05 ▸ The comments column |
 | File | Delete | ⌘⌫ | Board window, any card or lane selection — staged by place (resettled 2026-07-28; lanes rejoined 2026-07-29): board cards and lanes move to `.trash/`, trash selections delete permanently (03's recoverability confirm — freight-counting for lanes). Deliberately **not** extended to the card window: an enabled ⌘⌫ key equivalent would steal delete-to-line-start from the window's text surfaces, so there the card's delete is the sidebar Actions button (05). **Delete Immediately (⌥⌘⌫) is deliberately absent** (removed 2026-07-30): permanence is only reachable inside the trash — 03 ▸ Trash |
 | File | Empty Trash… (confirmed) | ⇧⌘⌫ | Board window, trash shown and non-empty (whole-trash scope, search-independent — 03 ▸ Trash) |
+| File | Print… | ⌘P | Board window: prints **the board** as a linear document — lanes in left-to-right order, each lane's cards top-to-bottom, never a graphical snapshot of the strip; the trash is unreachable (it is a sibling container of `lanes`, not a lane — 01 ▸ Deletion). Card window: prints **that card**. Validation is scope and nothing else — a print is a read, so neither the read-only lock nor the focused-editor rule closes it (Reveal in Finder's posture). Options ride in a **print-panel accessory** with the system's live preview: which components (title, icon+labels line, rendered body, comments — off by default, oldest- or newest-first), page breaks (continuous / between lanes / between cards, real sheet boundaries), one base font face and size every other size derives from, and a toggleable header/footer (board title, print date, page numbers, custom line). The option sets persist app-side as **named print profiles** with a reserved "Last Used" pseudo-profile that auto-captures the most recent settings — `UserDefaults`, never board data (02 ▸ Per-board app state), the zoom level's own argument. **Page Setup… is deliberately absent**: the paper questions are answered in the print panel's own page-setup group, so a second dialog would be a second place to set one margin |
 | File | Close | ⌘W | Any window; flushes per 02 ▸ Windows |
 | Edit | Undo / Redo (M−) | ⌘Z / ⇧⌘Z | Focus-routed (06 ▸ Undo routing): text undo in a focused editor, git undo otherwise; git undo disabled on no-git and repo-nested boards, during 06's abnormal-state pause (detached HEAD, in-progress merge/rebase), and under the read-only lock (02) |
 | Edit | Cut / Copy / Paste | ⌘X / ⌘C / ⌘V | Board window: cards and lanes (cards-XOR-lanes selections; lane paste lands after the anchor lane — 04 ▸ Clipboard; on a zero-lane board only a lane payload pastes — 04 ▸ ⌘N target rule); in the trash, ⌘C copies out and ⌘X/⌘V is the keyboard restore path (resettled 2026-07-28 — 04 ▸ The trash); paste never targets the trash; text editors: standard text clipboard |
@@ -115,7 +116,7 @@ Context menus are the per-item action inventory VoiceOver reads (10 ▸ The boar
 
 ## Standard macOS furniture
 
-System-provided: App menu (About, Hide, Quit), Window menu, Help (carries the one line teaching the System Settings remap path — 04). The app's own additions to this furniture are inventoried in Menu commands above — App ▸ Settings… and Window ▸ Welcome to Lanework; the remaining app-wide preferences, quick-style recents and `NSUserKeyEquivalents`, need no UI. **No Print story in v1** (⌘P unused). Customize Toolbar… per system convention (03). **Window tabbing stays enabled** (settled): the system's Show Tab Bar / tab items appear with their standard chords — ⇧⌘T is the system's, which is why Show Trash ships without a default (Menu commands above); tabbed board windows are ordinary system behavior, each tab still a full board window (a tab's saved per-board frame applies when it stands alone — 02-architecture.md).
+System-provided: App menu (About, Hide, Quit), Window menu, Help (carries the one line teaching the System Settings remap path — 04). The app's own additions to this furniture are inventoried in Menu commands above — App ▸ Settings… and Window ▸ Welcome to Lanework; the remaining app-wide preferences, quick-style recents and `NSUserKeyEquivalents`, need no UI. **Print is the app's own row now** (added 2026-08-09, retiring "No Print story in v1 (⌘P unused)"): File ▸ Print… ⌘P above replaces the platform's nil-target item outright, for Undo/Redo's reason — the standard row resolves through the responder chain and this app's print target is the document behind the focused *window*, which no responder vends. Customize Toolbar… per system convention (03). **Window tabbing stays enabled** (settled): the system's Show Tab Bar / tab items appear with their standard chords — ⇧⌘T is the system's, which is why Show Trash ships without a default (Menu commands above); tabbed board windows are ordinary system behavior, each tab still a full board window (a tab's saved per-board frame applies when it stands alone — 02-architecture.md).
 
 ## Changes from Kanban