wip

CHANGELOG.md

@@ -7,6 +7,15 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 ## [Unreleased]
 
 ### Added
+- User-created top-level command processes now survive a patterm
+  restart. Each spawn (palette form, command preset, or MCP
+  `spawn_process` with `kind=command`) writes a record to
+  `$XDG_DATA_HOME/patterm/projects/<key>/processes.json`; on next
+  startup patterm replays those entries before the UI accepts input,
+  so things like `bun run dev` or `tail -F log` come back without
+  re-typing. `close_process` (and the palette's close action) drops
+  the entry, and rename / "relaunch on exit" toggles are mirrored as
+  they happen. Agents and terminals stay ephemeral by design.
 - `patterm --version` prints the build version, git commit, and build
   date (e.g. `patterm v0.0.1 (commit abc1234, built 2026-05-14)`). The
   version string is injected by the build (`make patterm` derives it
@@ -15,6 +24,36 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   nothing has to be bumped by hand.
 - Ctrl+R restarts the focused command process from the Processes
   sidebar, including command entries that have already exited.
+- Scratchpads are now first-class navigation targets. Ctrl+W / Ctrl+S
+  step from the Processes section and agent tree onto scratchpad
+  entries; a focused scratchpad renders its content in the main
+  viewport (with the pad name as the header) instead of cramping the
+  bottom of the sidebar. The sidebar's scratchpad section is a names-
+  only list with the focused pad highlighted, and external MCP
+  `scratchpad_write` / `scratchpad_append` updates repaint the pad
+  view immediately.
+- Focused scratchpads now render as markdown — headings, bold, inline
+  code, fenced code blocks, bullet/numbered lists, blockquotes, and
+  horizontal rules pick up styling instead of the previous flat
+  word-wrap. Long pads scroll: the mouse wheel is the primary control
+  (patterm enables SGR mouse reporting while a pad is focused), and
+  Up/Down / PageUp/PageDown / Home / End work for keyboard users. The
+  header reports the visible row range and total row count. Esc leaves
+  the pad view and falls back to the first running process (or an
+  empty viewport). The scroll offset is preserved across MCP
+  `scratchpad_write` / `scratchpad_append` writes so a live update
+  doesn't snap the view back to the top.
+- Inline wheel scrollback for the focused child, backed by
+  libghostty-vt's native 5000-row scrollback history. On the primary
+  screen, mouse-wheel events scroll the emulator viewport in-place with
+  full SGR styling preserved — no modal view to enter or exit. On the
+  alternate screen wheel events still pass through to the child so
+  vim / less / codex receive them as input. Ctrl+B snaps the viewport
+  back to the live (bottom) area as the escape hatch from a scrolled-up
+  state. Patterm now keeps SGR mouse reporting armed on the host
+  terminal while the alt screen is active and filters mouse-mode
+  toggles from the child stream so wheel events keep arriving even
+  after a child program disables mouse tracking.
 
 ### Changed
 - CLI flag parsing switched from Go's stdlib `flag` to `spf13/pflag`.
@@ -24,12 +63,63 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   renders the canonical `--flag` form.
 
 ### Fixed
+- Tab bar and bottom status row no longer get overwritten by long
+  claude / codex sessions. Three holes were letting child output land
+  on the chrome: (1) absolute cursor moves — CUP / HVP / VPA — added
+  the row offset but didn't clamp to the viewport, so a child whose
+  internal row state drifted past its assigned height could walk the
+  host cursor onto the status row (or above the tab bar); (2) relative
+  cursor moves — CUU / CUD / CNL / CPL — were forwarded verbatim, so
+  a `CSI 50 A` from viewport row 1 walked the host cursor into the
+  tab bar before the next printable wiped it; (3) the host's DECSTBM
+  scroll region was only set during snapshot-replay preludes, so the
+  windows between (startup before first focus, post-SIGWINCH,
+  post-clearScreen) left the region defaulted to the full screen and
+  any LF / IND / NEL / RI / SU / SD at the viewport bottom scrolled
+  the chrome rows along with the pane. The cursor shifter now clamps
+  CUP/HVP/VPA rows to mainTop..mainBottom, the viewport renderer
+  rewrites CUU/CUD/CNL/CPL with a clamped step (and homes the column
+  for CNL/CPL), and patterm installs the host scroll region after
+  `enterScreen` and after every `clearScreen` (and resets it cleanly
+  on `leaveScreen` so the calling shell isn't left with a constrained
+  region).
 - Plain line-feed scrolling at the bottom of a child pane now invalidates
   and repaints the sidebar, so long agent output can no longer drag the
   sidebar border and labels out of view while the chrome cache stays warm.
+- Child DEC origin-mode and left/right-margin controls are now handled
+  inside the viewport renderer instead of being forwarded to the host
+  terminal, so later tab bar, sidebar, and status-line repaints keep
+  using physical screen coordinates and do not appear inside the
+  focused pane.
 - Exited command processes in the top Processes section are now reachable
   with Ctrl+W/S navigation, so a dead shell entry can be focused and
   restarted instead of becoming a visible but unreachable row.
+- Resizing the host terminal no longer makes codex (and other
+  diff-based TUIs) scroll-jump for several seconds. SIGWINCH is now
+  coalesced into a single resize after an ~80ms idle, the resize path
+  skips the full snapshot replay (the child's own SIGWINCH-driven
+  redraw fills the viewport), and `Child.NudgeRedraw` no longer
+  toggles the PTY through rows-1 + rows back-to-back during a
+  drag-resize.
+- Steady-state CPU during a long codex session dropped sharply.
+  Tab-bar and status-line repaints moved off the per-PTY-chunk path
+  to a 16ms chrome ticker; the scratchpad listing is cached and only
+  rebuilt when the pads change; the post-spawn / post-repaint
+  styled-snapshot replay budget dropped from 8 chunks to 2; URL/port
+  scanning short-circuits chunks that don't contain "http"; the
+  three writes around the autowrap toggle in `OnPTYOut` collapsed
+  into one syscall; the per-PTY-read `make+copy` was removed (the
+  64 KiB read buffer is reused, with a documented "do not retain"
+  listener contract); session listeners now dispatch through an
+  `atomic.Pointer` snapshot instead of a mutex copy on every chunk;
+  the per-child output ring is a true wrap-around buffer instead of
+  a slide-and-trim slice; `wait_for_pattern` wakes on PTY chunk
+  events with a 500ms fallback instead of unconditional 50ms
+  polling; ANSI stripping in MCP `get_process_output stream`,
+  `search_output`, and `wait_for_pattern scrollback` is now an
+  in-place byte walk; and the viewport renderer copies long ASCII
+  runs en bloc instead of feeding the state machine one byte at a
+  time.
 
 ## [0.0.1] - 2026-05-14