SetRune writes just rune+fg+attr without allocation.

--- helpers ----------------------------------------------------------

WriteText writes a single-line string cell-by-cell starting at (x, y), wrapping handled by the caller.

setToast schedules a transient status message in the footer.

nudgeSel moves the selected note by SCREEN-cell deltas (converted to world) and triggers a directional overshoot bounce. This keeps nudges feeling lik

CorkOn reports whether the cork texture overlay should be drawn.

--- helpers ----------------------------------------------------------

BgColor returns the solid fill color when one is set and parses; otherwise (nil, false) — meaning transparent (terminal shows through).

PinPos — screen position of the pin (top-center) including bob.

--- serialize --------------------------------------------------------- Serialize walks the grid, coalescing adjacent cells that share style. Returns

SetBlank clears a cell back to transparent (erases cork stars etc).

WorldX / WorldY convert a screen cell coordinate to the equivalent world coordinate given the zoom scale.

drawFooter writes a bottom status bar.

Selected returns the Background described by the working state.

Split returns the live (title, body) from the textarea content. First non-empty line is the title; the rest (skipping one separator blank) is the body

refreshActive points m.board at the workspace's current active board and regenerates per-board state (stars + global highlight color).

ActiveBoard returns the currently-focused board, never nil while the workspace has at least one board.

Dim applies a multiplier to every cell's foreground color, preserving transparency on bare cells. Used for blurring the backdrop during edit.

DimsFor returns rendered note size at a zoom level.

GenStarsForBoard returns a cork-texture stable across resizes-of-equal-size AND distinct per `grainSeed`. Row 0 is reserved for the tab bar — no stars

ModeAttr returns attribute bits to OR into cell renders. Unicode-math modes provide no ANSI attributes of their own (the visual "boldness" comes from

ParseHexColor parses "#rrggbb" or "rrggbb" (case-insensitive) into an RGB. Returns ok=false for any malformed input.

SaveWorkspace writes the workspace as a v4 file (workspace envelope).

ScreenX / ScreenY convert a world cell to screen (no bob applied).

StyleText maps ASCII letters/digits to the mode's Unicode variant.

TargetRect returns the centered edit-card rect for a given canvas size.

ToggleCork flips the cork overlay (used by left/right/space on the cork row).

drawNote renders a Note at the board's zoom level.

drawShadow wraps shadowRect for a Note at board zoom.

drawStringSet is the shared inner loop. It draws strings whose effective in-front layer matches `inFront`. If `attachToTopID` is set, any string touch

effectiveStars returns the cork texture only when cork mode is active; otherwise nil, so drawCork draws nothing (transparent / solid bg).

seedWorkspace returns a workspace with one seeded "main" board and the default look (cork on, transparent fill).

startBoardAnim captures the current board + its stars as the "from" frame of a board-switch crossfade. Call it BEFORE mutating the workspace's active

utf8Decode is a thin wrapper. Kept separate so future width-aware logic (e.g. CJK double-width) can slot in here.

--- borders --------------------------------------------------------- vertBorderChar picks the character used for a vertical border cell at row-offset

zoomScale returns the render-time scale factor applied to BOTH the note dimensions AND the note positions. This is "workspace zoom": at zoom -3 the wh

ApplyGlobalBorder syncs the package-level SelBorder with this board's HighlightColor. Call on load and whenever HighlightColor changes.

Lerp blends two colors linearly (0 → a, 1 → b).

LoadWorkspace reads notes.json, migrating older schemas on the way in. Returns (nil, nil) when the file simply doesn't exist yet.

OnCork / OnCustom report which special row the cursor is on.

ScreenRect — drawing rect (no bob, stable for shadow/hit-test).

SpliceOverlay splices `overlay` onto `bg` at visual cell position (x, y). Both strings are newline-separated; ANSI CSI escapes are preserved. Style st

drawBoardSnapshot renders one full board's content (cork + strings + notes) at full brightness. Apply Dim() afterwards if you want a fade. Used by bot

drawCork paints scattered brown ASCII chars across the canvas.

drawCurve is the low-level renderer. If `tight`, straight line. Else, parabolic sag. Chars chosen with terminal aspect (~2:1) correction so diagonals

drawStringsBehind renders only the strings with InFront=false. Called BEFORE notes are drawn so they sit beneath. If `attachToTopID` is non-empty, str

drawStringsInFront renders strings with InFront=true plus any string touching the active "attachToTopID" note (dragged or transitioning), plus the in-

BlankRect clears a rectangle back to transparent.

BlitAt copies every cell from `src` into this canvas at offset (dx, dy). Cells that fall outside this canvas are clipped. Source-empty cells (Rune ==

ConnectToWall creates a string from a note to a WORLD-coord wall-pin. The caller is responsible for converting a mouse click (screen) to world before

CycleActive moves the active index by `delta`, wrapping around.

EffectiveX: SCREEN X = world→screen projection + bob.

EffectiveY: SCREEN Y = world→screen projection + bob.

--- rendering --------------------------------------------------------

HexInput appends valid hex characters to the custom buffer (single leading '#'), capping at "#rrggbb", and live-previews the result.

MoveActive shifts the active board by `delta` positions in the workspace order (negative = move left, positive = move right). Wraps around. The active

RectFromNote builds the source rect for a note at the board's zoom (SCREEN coords, no bob — transitions should start from the stable resting position,

ScreenDeltaToWorld converts a 1-cell screen delta into a world delta, ensuring a non-zero input always moves at least 1 world cell.

--- Update ------------------------------------------------------------

--- View -------------------------------------------------------------

copyNoteText writes the title (if any) and body to the system clipboard, joined with a blank line. Updates the toast in place of error logs.