Land staged session/MCP/chrome work + sidebar clear-J fix

This batches the in-flight [Unreleased] block from CHANGELOG.md into a
single commit. Highlights:

- Real MCP protocol layer (initialize / tools/list / tools/call) so
  vendor MCP clients can complete the handshake against the per-PID
  socket. Legacy direct-dispatch preserved for the harness.
- New mcp_injection kinds — cli_override for codex, config_env for
  opencode — joining the existing env-var and config_file paths so
  patterm can slot into more agents without touching their real
  config or auth.
- Ctrl+A/D and Ctrl+W/S focus navigation across tabs and intra-tab
  process lists, recognised in legacy / kitty CSI u / xterm
  modifyOtherKeys encodings.
- Palette macros (sw / k / sp ) and reordering so open sessions
  surface above spawn-new entries.
- Two-row tab bar, sidebar/tabbar/status chrome cache, viewport-wipe
  on agent spawn, CR-terminated orchestrator injections, and split-
  Enter PTY writes so paste-detecting TUIs see Enter as a key event.

Also fixes the bug logged in TODO: claude's Ctrl+O tool-call expansion
emits CSI 0 J, which the viewport renderer was forwarding verbatim —
wiping the sidebar to the right of the cursor and leaving the chrome
cache convinced nothing had changed. CSI 0 J and CSI 1 J are now
translated into per-row ECH sequences clamped to the viewport, same
as CSI 2 J and CSI K already were.

Agent guides (CLAUDE.md / AGENTS.md) now spell out the
TODO->CHANGELOG workflow so completed items land in the changelog
rather than as ticked entries left behind in TODO.
This commit is contained in:
2026-05-14 19:09:35 +01:00
parent 7649587f9a
commit 3622c41fd0
25 changed files with 1951 additions and 163 deletions

View File

@@ -7,15 +7,15 @@ import (
"unicode/utf8"
)
// Three-row tab bar: labels row, subtitle row, underline row. The PTY
// viewport's top row is therefore mainTop == tabBarRows + 1.
const tabBarRows = 3
// Two-row tab bar: labels row, underline row. The PTY viewport's top
// row is therefore mainTop == tabBarRows + 1.
const tabBarRows = 2
// drawTabBar renders the top tab strip across the full host width. The
// strip has three rows: labels (with horizontal padding), a dim
// subtitle showing each child's argv, and an underline that's thick +
// accent for the focused tab and faint for the rest. Subtitles are
// truncated with `…` to the tab's width.
// drawTabBar renders the top tab strip across the full host width.
// Tabs share the available width with a flex layout — each visible
// session gets roughly width/N cells, with the remainder distributed
// to the leftmost tabs so the strip fills the screen edge-to-edge.
// A trailing "+ new" hint sits in the rightmost reserved slot.
func (st *uiState) drawTabBar() {
st.mu.Lock()
palOpen := st.palette != nil
@@ -37,94 +37,123 @@ func (st *uiState) drawTabBar() {
}
}
const (
newHint = "+ new"
minTabWidth = 6 // enough for two pad cells + "x…" or similar
)
newHintW := utf8.RuneCountInString(newHint) + 2 // " + new " framing
type tabRect struct {
startCol int
width int
label string
subtitle string
active bool
}
const (
leadingPad = 2 // host columns before the first tab
tabPad = 2 // spaces on each side of the label inside the tab
tabGap = 1 // gap columns between adjacent tabs
tailReserve = 8 // reserve room for the trailing "+ new" hint
)
// Reserve space at the right edge for "+ new". If there are too
// many tabs to fit even at minTabWidth, drop tabs from the right
// until they do. The current focus stays visible.
tabBudget := width - newHintW
if tabBudget < minTabWidth {
tabBudget = width
newHintW = 0
}
tabs := make([]tabRect, 0, len(sessions))
cur := leadingPad + 1
for _, c := range sessions {
label := c.Name
labelW := utf8.RuneCountInString(label)
tabW := labelW + tabPad*2
// If the tab won't fit, try truncating the label down to whatever
// space is left (label still has to leave room for "…").
if cur+tabW+tabGap+tailReserve > width+1 {
avail := width + 1 - cur - tabGap - tailReserve - tabPad*2
if avail < 3 {
break
}
label = clipRunes(label, avail-1) + "…"
labelW = utf8.RuneCountInString(label)
tabW = labelW + tabPad*2
tabs = append(tabs, tabRect{
startCol: cur, width: tabW,
label: label, subtitle: strings.Join(c.Argv, " "),
active: c.ID == focus,
})
cur += tabW + tabGap
break
visible := sessions
if len(visible) > 0 {
maxTabs := tabBudget / minTabWidth
if maxTabs < 1 {
maxTabs = 1
}
if len(visible) > maxTabs {
// Keep the focused tab plus as many leftward tabs as fit.
focusIdx := -1
for i, c := range visible {
if c.ID == focus {
focusIdx = i
break
}
}
if focusIdx < 0 {
focusIdx = 0
}
start := focusIdx - maxTabs + 1
if start < 0 {
start = 0
}
end := start + maxTabs
if end > len(visible) {
end = len(visible)
}
visible = visible[start:end]
}
}
tabs = append(tabs, tabRect{
startCol: cur, width: tabW,
label: label, subtitle: strings.Join(c.Argv, " "),
active: c.ID == focus,
})
cur += tabW + tabGap
tabs := make([]tabRect, 0, len(visible))
if n := len(visible); n > 0 {
base := tabBudget / n
extra := tabBudget - base*n
col := 1
for i, c := range visible {
w := base
if i < extra {
w++
}
label := c.Name
labelW := utf8.RuneCountInString(label)
maxLabelW := w - 2 // one pad on each side
if maxLabelW < 1 {
maxLabelW = 1
}
if labelW > maxLabelW {
if maxLabelW > 1 {
label = clipRunes(label, maxLabelW-1) + "…"
} else {
label = clipRunes(label, maxLabelW)
}
labelW = utf8.RuneCountInString(label)
}
tabs = append(tabs, tabRect{
startCol: col,
width: w,
label: label,
active: c.ID == focus,
})
col += w
}
}
var b strings.Builder
// Clear all three rows up front so a stale label from the previous
// frame can't bleed through.
// Clear both rows so a stale label from the previous frame can't
// bleed through.
b.WriteString("\x1b[1;1H\x1b[2K")
b.WriteString("\x1b[2;1H\x1b[2K")
b.WriteString("\x1b[3;1H\x1b[2K")
for _, t := range tabs {
// Row 1: label
// Row 1: centre-ish label inside the tab cell.
labelW := utf8.RuneCountInString(t.label)
leftPad := (t.width - labelW) / 2
if leftPad < 1 {
leftPad = 1
}
rightPad := t.width - labelW - leftPad
if rightPad < 0 {
rightPad = 0
}
fmt.Fprintf(&b, "\x1b[1;%dH", t.startCol)
if t.active {
b.WriteString(styleActive)
} else {
b.WriteString(styleHint)
}
b.WriteString(strings.Repeat(" ", tabPad))
b.WriteString(strings.Repeat(" ", leftPad))
b.WriteString(t.label)
b.WriteString(strings.Repeat(" ", tabPad))
b.WriteString(strings.Repeat(" ", rightPad))
b.WriteString(styleReset)
// Row 2: subtitle, truncated to tab width and dimmed.
sub := t.subtitle
if utf8.RuneCountInString(sub) > t.width {
if t.width > 1 {
sub = clipRunes(sub, t.width-1) + "…"
} else {
sub = ""
}
}
padR := t.width - utf8.RuneCountInString(sub)
if padR < 0 {
padR = 0
}
fmt.Fprintf(&b, "\x1b[2;%dH%s%s%s%s",
t.startCol, styleDim, sub, strings.Repeat(" ", padR), styleReset)
// Row 3: underline. Thick accent for the active tab, faint
// Row 2: underline. Thick accent for the active tab, faint
// border for the rest.
fmt.Fprintf(&b, "\x1b[3;%dH", t.startCol)
fmt.Fprintf(&b, "\x1b[2;%dH", t.startCol)
if t.active {
b.WriteString(styleAccent)
b.WriteString(strings.Repeat("━", t.width))
@@ -135,26 +164,26 @@ func (st *uiState) drawTabBar() {
b.WriteString(styleReset)
}
// "+ new" hint at the end of the labels row, in dim.
if cur+3 <= width {
fmt.Fprintf(&b, "\x1b[1;%dH%s+ new%s", cur+1, styleDim, styleReset)
// "+ new" hint right-aligned in the reserved slot.
if newHintW > 0 {
hintCol := width - newHintW + 1
fmt.Fprintf(&b, "\x1b[1;%dH %s%s%s ", hintCol, styleDim, newHint, styleReset)
// Underline continues faintly under the hint so the strip
// reads as one bar.
fmt.Fprintf(&b, "\x1b[2;%dH%s%s%s",
hintCol, styleBorder, strings.Repeat("─", newHintW), styleReset)
}
// Extend the faint underline across the rest of the host width so
// the tab strip reads as one continuous divider.
if cur <= width {
remain := width - cur + 1
if remain > 0 {
fmt.Fprintf(&b, "\x1b[3;%dH%s%s%s",
cur, styleBorder, strings.Repeat("─", remain), styleReset)
}
}
if leadingPad > 0 {
fmt.Fprintf(&b, "\x1b[3;1H%s%s%s",
styleBorder, strings.Repeat("─", leadingPad), styleReset)
frame := b.String()
st.chromeCacheMu.Lock()
if frame == st.tabBarCache {
st.chromeCacheMu.Unlock()
return
}
st.tabBarCache = frame
st.chromeCacheMu.Unlock()
st.outMu.Lock()
defer st.outMu.Unlock()
fmt.Fprintf(os.Stdout, "\x1b7%s\x1b8", b.String())
fmt.Fprintf(os.Stdout, "\x1b7%s\x1b8", frame)
}