feat: TUI chrome refresh — steel theme, home card, session topbar (0.9.24)

Cooler brand palette, compact CST-agent home with tagline and framed
composer, session topbar (model + chair chip), sidebar off by default.
Screenshot pipeline in tools/tui_shot.py; docs/screenshots for before/after.

Co-authored-by: Cursor <cursoragent@cursor.com>

include/cst_version.h

@@ -3,7 +3,7 @@
 
 #define CST_VERSION_MAJOR 0
 #define CST_VERSION_MINOR 9
-#define CST_VERSION_PATCH 23
+#define CST_VERSION_PATCH 24
 
 #define CST_VERSION_STR_(x) #x
 #define CST_VERSION_STR(x) CST_VERSION_STR_(x)

src/tui.c

@@ -260,7 +260,10 @@ enum {
   CP_ACCENT,  /* blue on panel */
   CP_BRIGHT,  /* near-white on panel */
   CP_LOGO_DIM,
-  CP_SEL      /* selected list row */
+  CP_SEL,     /* selected list row */
+  CP_TOPBAR,  /* session chrome strip */
+  CP_TOPBAR_MUTED,
+  CP_TOPBAR_ACCENT
 };
 
 typedef enum {
@@ -487,7 +490,7 @@ static char *xstrndup(const char *s, size_t n) {
 
 /* --- theme ---------------------------------------------------------------- */
 
-/* OpenCode dark panel — never inherit terminal default bg. */
+/* Dark panel chrome — cool steel accents (not peach OpenCode clone). */
 static void theme_init(void) {
   const char *nc = getenv("NO_COLOR");
   g_nocolor = nc && nc[0];
@@ -504,7 +507,7 @@ static void theme_init(void) {
   start_color();
   /* Do NOT call use_default_colors(): -1 would leak the terminal theme. */
 
-  short primary = COLOR_YELLOW;
+  short primary = COLOR_CYAN;
   short panel = COLOR_BLACK;
   short muted = COLOR_CYAN;
   short success = COLOR_GREEN;
@@ -517,42 +520,39 @@ static void theme_init(void) {
   if (COLORS >= 256) {
     box = 235;
     side = 234;
-    accent = 75;
+    accent = 75;     /* #5c9cf5 steel blue */
     bright = 255;
     logo_dim = 242;
-    /* Prefer xterm-256 slots so we don't bleach the 8 ANSI base colors.
-     * panel #121212→233, primary #fab283→216, muted #808080→244 */
-    primary = 216;
-    panel = 233;   /* #121212 — darker than 234 to avoid washed look */
+    primary = 75;    /* brand/user accent: blue, not peach */
+    panel = 233;     /* #121212 */
     muted = 244;
     success = 114;
     err = 167;
-    assist = 74;   /* soft cyan, not neon */
-    text = 250;    /* #bcbcbc — not near-white */
+    assist = 74;     /* soft cyan assistant */
+    text = 252;      /* brighter body for readability */
     if (can_change_color()) {
-      /* Tune those slots toward exact OpenCode hex */
-      init_color(216, 980, 698, 514); /* #fab283 */
-      init_color(233, 70, 70, 70);    /* #121212 */
-      init_color(244, 502, 502, 502); /* #808080 */
-      init_color(250, 720, 720, 720); /* body text */
+      init_color(75, 430, 660, 996);  /* #6ea8fe brand */
+      init_color(233, 55, 58, 70);    /* #0e0f12 deeper panel */
+      init_color(244, 502, 520, 560); /* cool muted */
+      init_color(252, 820, 830, 850); /* body */
       init_color(114, 400, 750, 450);
       init_color(167, 850, 320, 320);
-      init_color(74, 350, 700, 750);
-      init_color(235, 118, 118, 118); /* #1e1e1e raised box */
-      init_color(234, 90, 90, 90);    /* #171717 sidebar */
-      init_color(75, 361, 612, 961);  /* #5c9cf5 accent */
+      init_color(74, 380, 720, 780);
+      init_color(235, 100, 105, 120); /* raised box */
+      init_color(234, 78, 82, 96);    /* sidebar */
+      init_color(216, 980, 720, 420); /* warm tip only */
     }
   } else if (can_change_color() && COLORS >= 8) {
-    init_color(COLOR_BLACK, 70, 70, 70);    /* panel #121212 */
-    init_color(COLOR_YELLOW, 980, 698, 514); /* primary */
-    init_color(COLOR_CYAN, 502, 502, 502);  /* muted (reuse cyan slot) */
-    init_color(COLOR_WHITE, 720, 720, 720); /* body text */
+    init_color(COLOR_BLACK, 55, 58, 70);
+    init_color(COLOR_CYAN, 430, 660, 996);
+    init_color(COLOR_WHITE, 820, 830, 850);
     init_color(COLOR_GREEN, 400, 750, 450);
     init_color(COLOR_RED, 850, 320, 320);
-    init_color(COLOR_BLUE, 350, 700, 750); /* assist */
+    init_color(COLOR_BLUE, 380, 720, 780);
+    init_color(COLOR_YELLOW, 980, 720, 420);
     panel = COLOR_BLACK;
-    primary = COLOR_YELLOW;
-    muted = COLOR_CYAN;
+    primary = COLOR_CYAN;
+    muted = COLOR_WHITE;
     text = COLOR_WHITE;
     success = COLOR_GREEN;
     err = COLOR_RED;
@@ -608,6 +608,9 @@ static void theme_init(void) {
   init_pair(CP_BRIGHT, bright, panel);
   init_pair(CP_LOGO_DIM, logo_dim, panel);
   init_pair(CP_SEL, panel, accent);
+  init_pair(CP_TOPBAR, bright, side);
+  init_pair(CP_TOPBAR_MUTED, muted, side);
+  init_pair(CP_TOPBAR_ACCENT, accent, side);
 }
 
 /* Blank the window into the virtual screen before deleting it: refreshing
@@ -2196,8 +2199,22 @@ static void draw_input(tui_t *t) {
   if (pad < 0)
     pad = 0;
   int bar = HAS_COLOR() ? (int)COLOR_PAIR(CP_BOX_ACCENT) : 0;
-  for (int r = 0; r < bh; r++)
+  int edge = HAS_COLOR() ? (int)COLOR_PAIR(CP_BOX_MUTED) : 0;
+  /* Composer card frame. */
+  if (bh >= 2 && bw >= 4) {
+    put_wc(w, 0, 0, g_ascii ? L'+' : L'┌', bar);
+    for (int x = 1; x < bw - 1; x++)
+      put_wc(w, 0, x, g_ascii ? L'-' : L'─', edge);
+    put_wc(w, 0, bw - 1, g_ascii ? L'+' : L'┐', edge);
+    put_wc(w, bh - 1, 0, g_ascii ? L'+' : L'└', edge);
+    for (int x = 1; x < bw - 1; x++)
+      put_wc(w, bh - 1, x, g_ascii ? L'-' : L'─', edge);
+    put_wc(w, bh - 1, bw - 1, g_ascii ? L'+' : L'┘', edge);
+  }
+  for (int r = 1; r < bh - 1; r++) {
     put_wc(w, r, 0, L'┃', bar);
+    put_wc(w, r, bw - 1, g_ascii ? L'|' : L'│', edge);
+  }
   draw_mode_line(t, w, pad + h, bw);
   int cr, cc;
   input_layout(t, NULL, NULL, &cr, &cc);
@@ -2370,43 +2387,79 @@ static void draw_home(tui_t *t) {
   getmaxyx(t->logw, h, w);
   int box_top = t->in_y - t->log_y;
   int box_bot = box_top + t->in_h;
-  if (g_ascii || !g_utf8 || g_logo_text) {
-    int x = (w - 8) / 2, y = box_top - 2;
-    if (y >= 0) {
-      draw_ansi_at(t->logw, y, x, 3, "cst", CP_LOGO_DIM, 1, 0);
-      draw_ansi_at(t->logw, y, x + 3, 5, "agent", CP_BRIGHT, 1, 0);
-    }
-  } else if (box_top - LOGO_H - 1 >= 0 && w >= LOGO_W) {
-    int x0 = (w - LOGO_W) / 2, y0 = box_top - LOGO_H - 1;
+  /* Tight home stack: wordmark (default) or CST_LOGO=block, tagline, chip. */
+  int brand_y = box_top - 2;
+  if (brand_y < 0)
+    brand_y = 0;
+  int want_block = 0;
+  {
+    const char *lb = getenv("CST_LOGO");
+    want_block = lb && !strcmp(lb, "block");
+  }
+  if (want_block && !(g_ascii || !g_utf8 || g_logo_text) &&
+      box_top - LOGO_H - 2 >= 0 && w >= LOGO_W) {
+    int x0 = (w - LOGO_W) / 2, y0 = box_top - LOGO_H - 2;
     for (int g = 0; g < 8; g++)
       for (int r = 0; r < LOGO_H; r++)
         draw_ansi_at(t->logw, y0 + r, x0 + g * 5, 4, LOGO[g][r],
-                     g < 3 ? CP_LOGO_DIM : CP_BRIGHT, 0, 0);
+                     g < 3 ? CP_ACCENT : CP_BRIGHT, 0, 0);
+    brand_y = y0 + LOGO_H;
+  } else {
+    const char *mark = "CST-agent";
+    int mw = (int)strlen(mark);
+    int x = (w - mw) / 2;
+    if (x < 0)
+      x = 0;
+    if (brand_y >= 1)
+      brand_y -= 1;
+    draw_ansi_at(t->logw, brand_y, x, 3, "CST", CP_ACCENT, 1, 0);
+    draw_ansi_at(t->logw, brand_y, x + 3, mw - 3, "-agent", CP_BRIGHT, 1, 0);
+  }
+  int ty = brand_y + 1;
+  if (ty < box_top) {
+    const char *tag =
+        g_ascii ? "code . plan . parliament" : "code · plan · parliament";
+    int tw = (int)strlen(tag);
+    int x = (w - tw) / 2;
+    if (x < 0)
+      x = 0;
+    draw_ansi_at(t->logw, ty, x, tw, tag, CP_MUTED, 0, 0);
+  }
+  if (cst_parliament_is_active() && ty + 1 < box_top) {
+    char *st = cst_parliament_status_text();
+    if (st && st[0]) {
+      char chip[160];
+      snprintf(chip, sizeof(chip), "%s %s", g_ascii ? "*" : "◆", st);
+      int cw = vis_cols(chip);
+      if (cw > w - 2)
+        cw = w - 2;
+      draw_ansi_at(t->logw, ty + 1, (w - cw) / 2, cw, chip, CP_ACCENT, 0, 0);
+    }
+    free(st);
   }
   int right = t->in_x - t->log_x + t->in_w;
-  if (box_bot + 1 < h) {
+  if (box_bot < h) {
     char hint[96];
     snprintf(hint, sizeof(hint),
-             "\033[97mtab\033[39m modes  \033[97mctrl+p\033[39m commands");
+             "\033[97mtab\033[39m modes   \033[97mctrl+p\033[39m commands");
     int hw = vis_cols(hint);
     if (right - hw >= 0)
-      draw_ansi_at(t->logw, box_bot + 1, right - hw, hw, hint, CP_MUTED, 0, 0);
+      draw_ansi_at(t->logw, box_bot, right - hw, hw, hint, CP_MUTED, 0, 0);
   }
-  if (t->tip && box_bot + 3 < h) {
+  if (t->tip && box_bot + 2 < h) {
     char tip[256];
-    snprintf(tip, sizeof(tip), "\033[33m%s Tip\033[39m %s",
-             g_ascii ? "*" : "●", t->tip);
+    snprintf(tip, sizeof(tip), "%s  %s", g_ascii ? "*" : "●", t->tip);
     int tw = vis_cols(tip);
-    if (tw > w - 2)
-      tw = w - 2;
-    draw_ansi_at(t->logw, box_bot + 3, (w - tw) / 2, tw, tip, CP_MUTED, 0, 0);
+    if (tw > w - 4)
+      tw = w - 4;
+    draw_ansi_at(t->logw, box_bot + 2, (w - tw) / 2, tw, tip, CP_MUTED, 0, 0);
   }
   const char *ext = cst_extensions_report();
-  if (ext[0] && box_bot + 5 < h) {
+  if (ext[0] && box_bot + 3 < h) {
     int ew = vis_cols(ext);
     if (ew > w - 2)
       ew = w - 2;
-    draw_ansi_at(t->logw, box_bot + 5, (w - ew) / 2, ew, ext, CP_MUTED, 0, 0);
+    draw_ansi_at(t->logw, box_bot + 3, (w - ew) / 2, ew, ext, CP_MUTED, 0, 0);
   }
   int room = h - box_bot;
   draw_completion(t, box_bot, t->in_x - t->log_x, t->in_w, room, 0);
@@ -2704,10 +2757,61 @@ static int is_home(const tui_t *t) {
 
 static void layout(tui_t *t);
 
+static void draw_topbar(tui_t *t) {
+  if (!t->header)
+    return;
+  WINDOW *w = t->header;
+  if (HAS_COLOR())
+    wbkgd(w, COLOR_PAIR(CP_TOPBAR));
+  werase(w);
+  int bw = getmaxx(w);
+  const cst_agent_config_t *cfg = cst_agent_config(t->agent);
+  char left[256];
+  const char *title = t->title[0] ? t->title : "New session";
+  /* Session store ids look like hex prefixes — keep chrome human. */
+  {
+    int hexish = 1;
+    size_t n = strlen(title);
+    if (n >= 8 && n <= 40) {
+      for (size_t i = 0; i < n; i++) {
+        char c = title[i];
+        if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') ||
+              (c >= 'A' && c <= 'F') || c == '-')) {
+          hexish = 0;
+          break;
+        }
+      }
+    } else {
+      hexish = 0;
+    }
+    if (hexish)
+      title = "New session";
+  }
+  snprintf(left, sizeof(left), " %s", title);
+  int x = draw_ansi_at(w, 0, 0, bw, left, CP_TOPBAR, 1, 0);
+  if (cfg && x + 8 < bw) {
+    char mid[160];
+    snprintf(mid, sizeof(mid), "  %.48s%s%.24s", cfg->model,
+             cfg->provider[0] ? " · " : "", cfg->provider);
+    x += draw_ansi_at(w, 0, x, bw - x, mid, CP_TOPBAR_MUTED, 0, 0);
+  }
+  if (cst_parliament_is_active() && bw > 24) {
+    char chip[64];
+    if (cst_parliament_is_chair())
+      snprintf(chip, sizeof(chip), " chair ");
+    else
+      snprintf(chip, sizeof(chip), " seat ");
+    int cw = (int)strlen(chip);
+    draw_ansi_at(w, 0, bw - cw - 1, cw, chip, CP_TOPBAR_ACCENT, 1, 0);
+  }
+  wrefresh(w);
+}
+
 static void redraw_all(tui_t *t) {
   if (is_home(t) != t->home)
     layout(t);
   theme_paint_root();
+  draw_topbar(t);
   draw_log(t);
   draw_todo(t);
   draw_side(t);
@@ -2988,8 +3092,10 @@ static int clampi(int v, int lo, int hi) {
   return v < lo ? lo : v > hi ? hi : v;
 }
 
-/* Start screen: centered logo + box. Session: transcript column, input box
- * and status row at the bottom, optional sidebar on the right. */
+static void draw_topbar(tui_t *t);
+
+/* Start screen: centered brand + composer. Session: top chrome, transcript,
+ * input card, status; optional sidebar. */
 static void layout(tui_t *t) {
   getmaxyx(stdscr, t->rows, t->cols);
   if (t->rows < 4)
@@ -3002,6 +3108,7 @@ static void layout(tui_t *t) {
   t->side_w = 0;
   t->todo_rows = 0;
   int pad = t->rows >= 20 ? 1 : 0;
+  int topbar = (!t->home && t->rows >= 12) ? 1 : 0;
 
   if (t->home) {
     t->in_w = t->cols - 8 < 72 ? t->cols - 8 : 72;
@@ -3009,23 +3116,26 @@ static void layout(tui_t *t) {
       t->in_w = t->cols - 2;
     t->in_x = (t->cols - t->in_w) / 2;
   } else {
-    if (t->show_side && t->cols >= 120)
-      t->side_w = clampi(t->cols / 4, 32, 42);
+    if (t->show_side && t->cols >= 110)
+      t->side_w = clampi(t->cols / 4, 30, 40);
     int mw = t->cols - t->side_w;
     t->in_x = 1;
     t->in_w = mw - 2;
   }
   t->input_rows = input_visual_rows(t);
   t->in_h = t->input_rows + 1 + 2 * pad;
-  if (t->in_h > t->rows - 2) {
-    t->input_rows = clampi(t->rows - 3, 1, INPUT_MAX_ROWS);
+  if (t->in_h > t->rows - 2 - topbar) {
+    t->input_rows = clampi(t->rows - 3 - topbar, 1, INPUT_MAX_ROWS);
     t->in_h = t->input_rows + 1;
   }
 
   if (t->home) {
-    int block = LOGO_H + 1 + t->in_h + 4;
+    /* Compact vertical rhythm: brand + tagline + composer, not a huge void. */
+    int block = 3 + t->in_h + 3;
     int top = (t->rows - 1 - block) / 2;
-    t->in_y = clampi(top + LOGO_H + 1, 0, t->rows - 1 - t->in_h);
+    if (top < 1)
+      top = 1;
+    t->in_y = clampi(top + 3, 0, t->rows - 1 - t->in_h);
     t->log_x = t->log_y = 0;
     t->logw = tui_newwin(t->rows - 1, t->cols, 0, 0);
     t->status = tui_newwin(1, t->cols - 2, t->rows - 1, 1);
@@ -3037,7 +3147,9 @@ static void layout(tui_t *t) {
     if (open && t->rows >= 16)
       t->todo_rows = 1 + (total < TODO_PANEL_MAX ? total : TODO_PANEL_MAX);
     t->log_x = 1;
-    t->log_y = t->rows >= 12 ? 1 : 0;
+    t->log_y = topbar;
+    if (topbar)
+      t->header = tui_newwin(1, mw, 0, 0);
     int log_h = t->in_y - 1 - t->todo_rows - t->log_y;
     if (log_h < 1) {
       t->todo_rows = 0;
@@ -3055,6 +3167,8 @@ static void layout(tui_t *t) {
     wbkgdset(t->logw, COLOR_PAIR(CP_PANEL));
     wbkgdset(t->status, COLOR_PAIR(CP_PANEL));
     wbkgdset(t->input, COLOR_PAIR(CP_BOX));
+    if (t->header)
+      wbkgdset(t->header, COLOR_PAIR(CP_TOPBAR));
     if (t->side)
       wbkgdset(t->side, COLOR_PAIR(CP_SIDE));
   }
@@ -7088,7 +7202,7 @@ int cst_tui_run(cst_agent_t *agent) {
   t.focus_think_idx = -1;
   t.hist_browse = -1;
   t.show_todo = 1;
-  t.show_side = 1;
+  t.show_side = 0; /* /sidebar to open; keeps the main column calm by default */
   {
     cst_settings_t st;
     cst_settings_load(&st);

tools/tui_shot.py

@@ -0,0 +1,153 @@
+#!/usr/bin/env python3
+"""ANSI pane dump → HTML → PNG (chrome headless). Usage: tui_shot.py in.ansi out.png"""
+from __future__ import annotations
+
+import html
+import subprocess
+import sys
+from pathlib import Path
+
+SPECIAL = {
+    75: "#6ea8fe",
+    74: "#61b8c7",
+    216: "#faa06b",
+    233: "#0e0f12",
+    234: "#14161e",
+    235: "#1a1c24",
+    244: "#80848f",
+    250: "#bcbcbc",
+    252: "#d1d4d9",
+    255: "#ffffff",
+    242: "#6a6a6a",
+    114: "#66bf73",
+    167: "#d95252",
+    157: "#afff87",
+    22: "#005f00",
+    203: "#ff5f5f",
+    52: "#5f0000",
+}
+
+
+def ansi_to_html(text: str) -> str:
+    cmap = {
+        30: "#3c3c46",
+        31: "#e65a5a",
+        32: "#5ad278",
+        33: "#faa06b",
+        34: "#6ea8fe",
+        35: "#d282d2",
+        36: "#5ad2e6",
+        37: "#bcbcbc",
+        90: "#80848f",
+        91: "#ff8282",
+        92: "#82ff96",
+        93: "#ffeb82",
+        94: "#96beff",
+        95: "#eba0eb",
+        96: "#82ebff",
+        97: "#ffffff",
+    }
+    out: list[str] = []
+    i = 0
+    bold = dim = False
+    fg = "#d1d4d9"
+    open_span = False
+
+    def close() -> None:
+        nonlocal open_span
+        if open_span:
+            out.append("</span>")
+            open_span = False
+
+    def reopen() -> None:
+        nonlocal open_span
+        close()
+        styles = [f"color:{fg}"]
+        if bold:
+            styles.append("font-weight:700")
+        if dim:
+            styles.append("opacity:.65")
+        out.append(f'<span style="{";".join(styles)}">')
+        open_span = True
+
+    reopen()
+    while i < len(text):
+        if text[i] == "\x1b" and i + 1 < len(text) and text[i + 1] == "[":
+            j = i + 2
+            while j < len(text) and text[j] != "m":
+                j += 1
+            seq = text[i + 2 : j]
+            i = j + 1 if j < len(text) else len(text)
+            parts = [int(p) for p in seq.split(";") if p.isdigit()] if seq else [0]
+            k = 0
+            while k < len(parts):
+                c = parts[k]
+                if c == 0:
+                    bold = dim = False
+                    fg = "#d1d4d9"
+                elif c == 1:
+                    bold = True
+                elif c == 2:
+                    dim = True
+                elif c == 22:
+                    bold = dim = False
+                elif c == 38 and k + 2 < len(parts) and parts[k + 1] == 5:
+                    fg = SPECIAL.get(parts[k + 2], fg)
+                    k += 2
+                elif c in cmap:
+                    fg = cmap[c]
+                elif c == 39:
+                    fg = "#d1d4d9"
+                k += 1
+            reopen()
+            continue
+        if text[i] == "\n":
+            out.append("\n")
+            i += 1
+            continue
+        if text[i] == "\r":
+            i += 1
+            continue
+        out.append(html.escape(text[i]))
+        i += 1
+    close()
+    body = "".join(out)
+    return f"""<!doctype html><meta charset=utf-8>
+<style>
+html,body{{margin:0;background:#07080a}}
+pre{{margin:0;padding:18px 22px;background:#0e0f12;color:#d1d4d9;
+font:14px/1.35 "JetBrains Mono","Cascadia Mono",Menlo,Consolas,monospace;
+white-space:pre; min-height:100vh; letter-spacing:0.01em}}
+</style><pre>{body}</pre>"""
+
+
+def main() -> int:
+    if len(sys.argv) < 3:
+        print("usage: tui_shot.py in.ansi out.png", file=sys.stderr)
+        return 2
+    ansi = Path(sys.argv[1]).read_text(encoding="utf-8", errors="replace")
+    html_path = Path(sys.argv[2]).with_suffix(".html")
+    html_path.write_text(ansi_to_html(ansi), encoding="utf-8")
+    png = Path(sys.argv[2])
+    chrome = "google-chrome"
+    subprocess.run(
+        [
+            chrome,
+            "--headless=new",
+            "--disable-gpu",
+            "--no-sandbox",
+            "--hide-scrollbars",
+            "--window-size=1280,800",
+            f"--screenshot={png}",
+            html_path.resolve().as_uri(),
+        ],
+        check=False,
+        stdout=subprocess.DEVNULL,
+        stderr=subprocess.DEVNULL,
+    )
+    print(png, png.stat().st_size if png.exists() else 0)
+    return 0 if png.exists() else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())