From 248e265165009eeca659e160e130a9d8f4c13ce4 Mon Sep 17 00:00:00 2001
From: cmliu <cmliu@users.noreply.github.com>
Date: Thu, 30 Jul 2026 01:53:43 +0800
Subject: [PATCH 1/4] =?UTF-8?q?feat:=20=E5=A2=9E=E5=BC=BA=E8=A7=A3?=
 =?UTF-8?q?=E6=9E=90=E5=8A=9F=E8=83=BD=EF=BC=8C=E6=94=AF=E6=8C=81=E5=A4=9A?=
 =?UTF-8?q?=E7=A7=8D=E6=A0=BC=E5=BC=8F=E7=9A=84=E6=95=B0=E5=AD=97=E5=92=8C?=
 =?UTF-8?q?=E5=86=85=E5=AD=98=E4=BD=BF=E7=94=A8=E6=83=85=E5=86=B5=E8=A7=A3?=
 =?UTF-8?q?=E6=9E=90?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/backend/top-parser.ts | 186 +++++++++++++++++++++++++++++++-------
 1 file changed, 155 insertions(+), 31 deletions(-)

diff --git a/src/backend/top-parser.ts b/src/backend/top-parser.ts
index a5ed431..91d6448 100644
--- a/src/backend/top-parser.ts
+++ b/src/backend/top-parser.ts
@@ -31,21 +31,37 @@ export interface ProcessSnapshot {
 const ANSI_ESCAPE_RE = /\x1b(?:\[[0-?]*[ -/]*[@-~]|\][^\x07]*(?:\x07|\x1b\\))/g;
 const MAX_PROCESSES = 512;
 
-function finiteNumber(value: string | undefined): number | null {
+// Matches a single numeric token that may use ',' or '.' as decimal separator.
+const NUMBER_TOKEN_RE = /\d+(?:[.,]\d+)?/;
+
+function finiteNumber(value: string | undefined | null): number | null {
   if (!value) return null;
   const parsed = Number(value.replace(',', '.').replace(/%$/, ''));
   return Number.isFinite(parsed) && parsed >= 0 ? parsed : null;
 }
 
+// Parses "10,23" / "10.23" / "10" -> number. Returns null on invalid input.
+function parseDecimal(token: string | undefined | null): number | null {
+  if (!token) return null;
+  if (!NUMBER_TOKEN_RE.test(token)) return null;
+  // Ensure the whole token is a number (e.g. reject "10abc").
+  if (!/^\d+(?:[.,]\d+)?$/.test(token)) return null;
+  return Number(token.replace(',', '.'));
+}
+
 function clampPercent(value: number): number {
   return Math.min(100, Math.max(0, value));
 }
 
 function parseLoad(lines: string[]): [number, number, number] | null {
   for (const line of lines) {
-    const match = line.match(/load average:\s*([\d.]+)[,\s]+([\d.]+)[,\s]+([\d.]+)/i);
-    if (!match) continue;
-    const values = match.slice(1, 4).map((value) => finiteNumber(value));
+    // Linux: "load average: 10.23, 11.92, 12.63"
+    // FreeBSD: "load averages: 10,23, 11,92, 12,63"
+    const prefix = line.match(/load averages?\s*:\s*(.+)/i);
+    if (!prefix) continue;
+    const tokens = prefix[1].match(/\d+(?:[.,]\d+)?/g);
+    if (!tokens || tokens.length < 3) continue;
+    const values = tokens.slice(0, 3).map(parseDecimal);
     if (values.every((value): value is number => value !== null)) return values as [number, number, number];
   }
   return null;
@@ -53,50 +69,148 @@ function parseLoad(lines: string[]): [number, number, number] | null {
 
 function parseCPU(lines: string[]): number | null {
   for (const line of lines) {
-    if (!/(?:^|\s)(?:%?Cpu\(s\)|CPU):/i.test(line)) continue;
-    const idle = line.match(/([\d.]+)\s*%?\s*(?:id|idle)\b/i);
-    const idlePercent = finiteNumber(idle?.[1]);
+    // Linux: "%Cpu(s): 13.1 us, 0.7 sy, 6.4 ni, 79.6 id, ..."
+    // FreeBSD: "CPU: 13,1% user, 0,7% nice, 6,4% system, 0,1% interrupt, 79,6% idle"
+    // macOS: "CPU usage: 13% user, 6% sys, 79% idle"
+    if (!/(?:^|\s)(?:%?Cpu\(s\)|CPU(?:\s+usage)?|%CPU)\s*:/i.test(line)) continue;
+    const idle = line.match(/([\d.,]+)\s*%?\s*(?:id|idle)\b/i);
+    const idlePercent = parseDecimal(idle?.[1]);
     if (idlePercent !== null) return clampPercent(100 - idlePercent);
+    // Fallback: sum user + sys (macOS sometimes omits idle).
+    const user = line.match(/([\d.,]+)\s*%?\s*(?:us(?:er)?|user)\b/i);
+    const sys = line.match(/([\d.,]+)\s*%?\s*(?:sy(?:s|stem)?|system)\b/i);
+    const userVal = parseDecimal(user?.[1]);
+    const sysVal = parseDecimal(sys?.[1]);
+    if (userVal !== null && sysVal !== null) return clampPercent(userVal + sysVal);
   }
   return null;
 }
 
 function unitMultiplier(label: string | undefined): number {
   const unit = label?.toLowerCase() ?? '';
+  if (unit.startsWith('t')) return 1024 ** 4;
   if (unit.startsWith('g')) return 1024 ** 3;
   if (unit.startsWith('m')) return 1024 ** 2;
   if (unit.startsWith('k')) return 1024;
   return 1;
 }
 
+// Parses "24G" / "3196K" / "5120M" / "10" -> bytes. Suffix is a single letter (k/m/g/t).
+function parseSizeToken(token: string): number | null {
+  const match = token.match(/^([\d.,]+)\s*([kmgtpe]?)$/i);
+  if (!match) return null;
+  const value = parseDecimal(match[1]);
+  if (value === null) return null;
+  const suffix = match[2].toLowerCase();
+  const power = suffix ? 'kmgtpe'.indexOf(suffix) + 1 : 0;
+  return Math.round(value * (1024 ** power));
+}
+
 function parseUsage(lines: string[], kind: 'Mem' | 'Swap'): ResourceUsage | null {
   for (const line of lines) {
+    // macOS PhysMem (only valid for Mem).
+    if (kind === 'Mem' && /^\s*PhysMem\s*:/i.test(line)) {
+      const result = parseMacOSPhysMem(line);
+      if (result) return result;
+      continue;
+    }
     if (!new RegExp(`(?:^|\\s)(?:KiB|MiB|GiB)?\\s*${kind}\\s*:`, 'i').test(line)) continue;
-    const unit = line.match(/(?:^|\s)(KiB|MiB|GiB)\s*(?:Mem|Swap)\s*:/i)?.[1];
-    const multiplier = unitMultiplier(unit ?? 'KiB');
-    const amount = (label: 'total' | 'used' | 'free'): number | null => {
-      const match = line.match(new RegExp(`([\\d.]+)\\s*([kmgt]?)\\s+${label}\\b`, 'i'));
-      const value = finiteNumber(match?.[1]);
-      return value === null ? null : value * (match?.[2] ? unitMultiplier(match[2]) : multiplier);
-    };
-    const total = amount('total');
-    const used = amount('used');
-    const free = amount('free');
-    const resolvedTotal = total ?? (used !== null && free !== null ? used + free : null);
-    if (resolvedTotal === null || used === null || resolvedTotal < 0) continue;
-    const totalBytes = Math.round(resolvedTotal);
-    const usedBytes = Math.min(totalBytes, Math.round(used));
-    return {
-      usedBytes,
-      totalBytes,
-      percent: totalBytes > 0 ? clampPercent((usedBytes / totalBytes) * 100) : 0,
-    };
+
+    // Try the explicit total/used/free labelled form first (Linux + FreeBSD Swap).
+    const labelled = parseLabelledUsage(line);
+    if (labelled) return labelled;
+
+    // Then the FreeBSD category form: "Mem: 24G Active, 22G Inact, 18G Laundry, 51G Wired, 10G Free".
+    if (kind === 'Mem') {
+      const categorised = parseFreeBSDMemUsage(line);
+      if (categorised) return categorised;
+    }
   }
   return null;
 }
 
+// Handles "X total, Y used, Z free" style lines (Linux, FreeBSD Swap).
+function parseLabelledUsage(line: string): ResourceUsage | null {
+  const unit = line.match(/(?:^|\s)(KiB|MiB|GiB)\s*(?:Mem|Swap)\s*:/i)?.[1];
+  const defaultMultiplier = unit ? unitMultiplier(unit) : 1;
+
+  const amount = (label: string): number | null => {
+    const match = line.match(new RegExp(`([\\d.,]+)\\s*([kmgtpe]i?b?|[kmgtpe]?)\\s+${label}\\b`, 'i'));
+    if (!match) return null;
+    const value = parseDecimal(match[1]);
+    if (value === null) return null;
+    const suffix = match[2];
+    const mult = suffix ? unitMultiplier(suffix) : defaultMultiplier;
+    return value * mult;
+  };
+
+  const total = amount('total');
+  const used = amount('used');
+  const free = amount('free');
+  const resolvedTotal = total ?? (used !== null && free !== null ? used + free : null);
+  if (resolvedTotal === null || used === null || resolvedTotal < 0) return null;
+  const totalBytes = Math.round(resolvedTotal);
+  const usedBytes = Math.min(totalBytes, Math.round(used));
+  return {
+    usedBytes,
+    totalBytes,
+    percent: totalBytes > 0 ? clampPercent((usedBytes / totalBytes) * 100) : 0,
+  };
+}
+
+// Handles FreeBSD Mem: "24G Active, 22G Inact, 18G Laundry, 51G Wired, 10G Free".
+// total = sum of all listed categories; used = total - free.
+function parseFreeBSDMemUsage(line: string): ResourceUsage | null {
+  const memLabels = new Set(['active', 'inact', 'laundry', 'wired', 'buf', 'cache', 'free', 'laund']);
+  // Match "<number><optional unit> <Label>" pairs (e.g. "24G Active", "10G Free"). Case-insensitive so uppercase
+  // unit letters (G/M/K) match the [kmgtpe] class.
+  const tokenRegex = /([\d.,]+)\s*([kmgtpe]?)\s+([A-Za-z][\w-]*)/gi;
+  const entries: { size: number; label: string }[] = [];
+  let match: RegExpExecArray | null;
+  while ((match = tokenRegex.exec(line)) !== null) {
+    const size = parseSizeToken(match[1] + (match[2] || ''));
+    if (size === null) continue;
+    const label = match[3].toLowerCase();
+    if (!memLabels.has(label)) continue;
+    entries.push({ size, label });
+  }
+  if (entries.length === 0) return null;
+
+  const freeEntry = entries.find((e) => e.label === 'free');
+  const totalBytes = Math.round(entries.reduce((sum, e) => sum + e.size, 0));
+  if (totalBytes <= 0) return null;
+  const usedBytes = Math.max(0, totalBytes - (freeEntry?.size ?? 0));
+  return {
+    usedBytes,
+    totalBytes,
+    percent: clampPercent((usedBytes / totalBytes) * 100),
+  };
+}
+
+// macOS: "PhysMem: 100G used (24G wired), 10G unused." or "PhysMem: 110G used, 10G unused."
+function parseMacOSPhysMem(line: string): ResourceUsage | null {
+  const usedMatch = line.match(/([\d.,]+)\s*([kmgtpe]?)\s*used/i);
+  const unusedMatch = line.match(/([\d.,]+)\s*([kmgtpe]?)\s*(?:unused|free)/i);
+  if (!usedMatch) return null;
+  const used = parseSizeToken(usedMatch[1] + (usedMatch[2] || ''));
+  if (used === null) return null;
+  let total: number;
+  if (unusedMatch) {
+    const unused = parseSizeToken(unusedMatch[1] + (unusedMatch[2] || ''));
+    total = used + (unused ?? 0);
+  } else {
+    total = used;
+  }
+  return {
+    usedBytes: used,
+    totalBytes: total,
+    percent: total > 0 ? clampPercent((used / total) * 100) : 0,
+  };
+}
+
 function headerIndex(headers: string[], ...names: string[]): number {
-  return headers.findIndex((header) => names.includes(header.toUpperCase()));
+  const upperNames = names.map((n) => n.toUpperCase());
+  return headers.findIndex((header) => upperNames.includes(header.toUpperCase()));
 }
 
 function parseMemoryValue(value: string | undefined): number | null {
@@ -110,20 +224,30 @@ function parseMemoryValue(value: string | undefined): number | null {
 }
 
 function parseProcesses(lines: string[]): ProcessEntry[] {
-  const headerLineIndex = lines.findIndex((line) => /^\s*PID\s+/i.test(line) && /(?:^|\s)%?CPU(?:\s|$)/i.test(line));
+  // Header line starts with PID. Both Linux ("%CPU") and FreeBSD ("WCPU") headers match this.
+  const headerLineIndex = lines.findIndex((line) => /^\s*PID\s+/i.test(line));
   if (headerLineIndex < 0) return [];
   const headers = lines[headerLineIndex].trim().split(/\s+/);
   const pidIndex = headerIndex(headers, 'PID');
   const userIndex = headerIndex(headers, 'USER', 'USERNAME');
-  const cpuIndex = headerIndex(headers, '%CPU', 'CPU%');
+  // Linux: %CPU, macOS: %CPU, FreeBSD: WCPU
+  const cpuIndex = headerIndex(headers, '%CPU', 'CPU%', 'WCPU');
   const residentMemoryIndex = headerIndex(headers, 'RES', 'RSS');
-  const memoryIndex = residentMemoryIndex >= 0 ? residentMemoryIndex : headerIndex(headers, 'VSZ', 'VIRT');
+  const memoryIndex = residentMemoryIndex >= 0 ? residentMemoryIndex : headerIndex(headers, 'VSZ', 'VIRT', 'SIZE');
   const memoryPercentIndex = headerIndex(headers, '%MEM', 'MEM%', '%VSZ');
   const stateIndex = headerIndex(headers, 'S', 'STAT', 'STATE');
   const timeIndex = headerIndex(headers, 'TIME+', 'TIME');
   const commandIndex = headerIndex(headers, 'COMMAND', 'CMD', 'COMMAND+');
   if (pidIndex < 0 || commandIndex < 0) return [];
 
+  // Determine the last column index we care about (excluding COMMAND itself). When COMMAND is the
+  // final column (Linux/FreeBSD), the rest of the line is the full command line. When COMMAND is
+  // in the middle (macOS: "PID COMMAND %CPU TIME"), only the single token is the command name.
+  const knownIndices = [pidIndex, userIndex, memoryIndex, memoryPercentIndex, cpuIndex, stateIndex, timeIndex]
+    .filter((i) => i >= 0);
+  const maxKnownIndex = knownIndices.length > 0 ? Math.max(...knownIndices) : -1;
+  const commandIsLast = commandIndex > maxKnownIndex;
+
   const processes: ProcessEntry[] = [];
   for (const line of lines.slice(headerLineIndex + 1)) {
     if (!line.trim()) continue;
@@ -138,7 +262,7 @@ function parseProcesses(lines: string[]): ProcessEntry[] {
       cpuPercent: cpuIndex >= 0 ? finiteNumber(fields[cpuIndex]) : null,
       state: stateIndex >= 0 ? fields[stateIndex] ?? '' : '',
       time: timeIndex >= 0 ? fields[timeIndex] ?? '' : '',
-      command: fields.slice(commandIndex).join(' '),
+      command: commandIsLast ? fields.slice(commandIndex).join(' ') : (fields[commandIndex] ?? ''),
     });
     if (processes.length >= MAX_PROCESSES) break;
   }

From 19052ca9892a81c4a8763f9e4907169f38a706df Mon Sep 17 00:00:00 2001
From: cmliu <cmliu@users.noreply.github.com>
Date: Thu, 30 Jul 2026 02:01:52 +0800
Subject: [PATCH 2/4] =?UTF-8?q?feat:=20=E6=9B=B4=E6=96=B0=E8=BF=9B?=
 =?UTF-8?q?=E7=A8=8B=E7=9B=91=E6=8E=A7=E5=91=BD=E4=BB=A4=E4=BB=A5=E6=94=AF?=
 =?UTF-8?q?=E6=8C=81=E5=A4=9A=E5=B9=B3=E5=8F=B0=EF=BC=8C=E7=A1=AE=E4=BF=9D?=
 =?UTF-8?q?=E6=AD=A3=E7=A1=AE=E6=98=BE=E7=A4=BA=E8=BF=9B=E7=A8=8B=E4=BF=A1?=
 =?UTF-8?q?=E6=81=AF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/backend/session.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/backend/session.ts b/src/backend/session.ts
index 1367684..ba49196 100644
--- a/src/backend/session.ts
+++ b/src/backend/session.ts
@@ -72,7 +72,14 @@ const PROCESS_CHANNEL_OPEN_TIMEOUT_MS = 15_000;
 const PROCESS_MAX_BUFFER_BYTES = 2 * 1024 * 1024;
 const PROCESS_SNAPSHOT_MARKER = '__CF_WEBSSH_TOP_SNAPSHOT__';
 // Octal escapes keep the delimiter itself out of the command line shown by top.
-const PROCESS_MONITOR_COMMAND = "LC_ALL=C LANG=C sh -c 'while :; do printf \"\\137\\137CF_WEBSSH_TOP_SNAPSHOT\\137\\137\\n\"; top -b -n 1 -w 512 2>/dev/null || top -b -n 1 2>/dev/null || exit 127; sleep 2; done'";
+// `top` flags differ across platforms: Linux procps uses `-n 1` (1 iteration) + `-w 512` (width),
+// but on FreeBSD `-n 1` means "show 1 process" and `-w` is unsupported — so the previous
+// Linux-only fallback chain silently truncated FreeBSD output to a single process row.
+// Dispatch on `uname -s` so each platform gets the correct flags:
+//   Linux:    top -b -n 1 -w 512        (batch, 1 iteration, wide)
+//   FreeBSD:  top -b -a -d 1            (batch, all processes, 1 iteration)
+//   macOS:    top -l 1 -n 0 -s 0        (1 log sample, all processes, no delay)
+const PROCESS_MONITOR_COMMAND = "LC_ALL=C LANG=C sh -c 'os=$(uname -s 2>/dev/null || echo Linux); case \"$os\" in FreeBSD) T=\"top -b -a -d 1\";; Darwin) T=\"top -l 1 -n 0 -s 0\";; *) T=\"top -b -n 1 -w 512\";; esac; while :; do printf \"\\137\\137CF_WEBSSH_TOP_SNAPSHOT\\137\\137\\n\"; $T 2>/dev/null || exit 127; sleep 2; done'";
 const KEEPALIVE_NAME = new TextEncoder().encode('keepalive@openssh.com');
 
 export class SSHSession {

From d956602a4508305f622fe24bf327dd7724c68a3d Mon Sep 17 00:00:00 2001
From: cmliu <cmliu@users.noreply.github.com>
Date: Thu, 30 Jul 2026 02:09:32 +0800
Subject: [PATCH 3/4] =?UTF-8?q?feat:=20=E6=9B=B4=E6=96=B0=E8=BF=9B?=
 =?UTF-8?q?=E7=A8=8B=E7=9B=91=E6=8E=A7=E5=91=BD=E4=BB=A4=E4=BB=A5=E4=BF=AE?=
 =?UTF-8?q?=E6=AD=A3=E8=B7=A8=E5=B9=B3=E5=8F=B0=E5=85=BC=E5=AE=B9=E6=80=A7?=
 =?UTF-8?q?=EF=BC=8C=E7=A1=AE=E4=BF=9D=E6=AD=A3=E7=A1=AE=E6=98=BE=E7=A4=BA?=
 =?UTF-8?q?=E8=BF=9B=E7=A8=8B=E4=BF=A1=E6=81=AF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/backend/session.ts | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/backend/session.ts b/src/backend/session.ts
index ba49196..a50db22 100644
--- a/src/backend/session.ts
+++ b/src/backend/session.ts
@@ -72,14 +72,17 @@ const PROCESS_CHANNEL_OPEN_TIMEOUT_MS = 15_000;
 const PROCESS_MAX_BUFFER_BYTES = 2 * 1024 * 1024;
 const PROCESS_SNAPSHOT_MARKER = '__CF_WEBSSH_TOP_SNAPSHOT__';
 // Octal escapes keep the delimiter itself out of the command line shown by top.
-// `top` flags differ across platforms: Linux procps uses `-n 1` (1 iteration) + `-w 512` (width),
+// `top` flags differ across platforms: Linux procps uses `-n 1` (1 iteration) + `-c` (full command line),
 // but on FreeBSD `-n 1` means "show 1 process" and `-w` is unsupported — so the previous
 // Linux-only fallback chain silently truncated FreeBSD output to a single process row.
+// `-c` is required on Linux/macOS because their top defaults to showing just the program name;
+// FreeBSD top shows the full command line by default. `-w` is omitted on Linux because procps-ng
+// batch mode defaults to unlimited width (capping it at 512 would truncate long java/node args).
 // Dispatch on `uname -s` so each platform gets the correct flags:
-//   Linux:    top -b -n 1 -w 512        (batch, 1 iteration, wide)
+//   Linux:    top -b -c -n 1            (batch, full command line, 1 iteration)
 //   FreeBSD:  top -b -a -d 1            (batch, all processes, 1 iteration)
-//   macOS:    top -l 1 -n 0 -s 0        (1 log sample, all processes, no delay)
-const PROCESS_MONITOR_COMMAND = "LC_ALL=C LANG=C sh -c 'os=$(uname -s 2>/dev/null || echo Linux); case \"$os\" in FreeBSD) T=\"top -b -a -d 1\";; Darwin) T=\"top -l 1 -n 0 -s 0\";; *) T=\"top -b -n 1 -w 512\";; esac; while :; do printf \"\\137\\137CF_WEBSSH_TOP_SNAPSHOT\\137\\137\\n\"; $T 2>/dev/null || exit 127; sleep 2; done'";
+//   macOS:    top -l 1 -c -n 0 -s 0     (1 log sample, full command line, all processes, no delay)
+const PROCESS_MONITOR_COMMAND = "LC_ALL=C LANG=C sh -c 'os=$(uname -s 2>/dev/null || echo Linux); case \"$os\" in FreeBSD) T=\"top -b -a -d 1\";; Darwin) T=\"top -l 1 -c -n 0 -s 0\";; *) T=\"top -b -c -n 1\";; esac; while :; do printf \"\\137\\137CF_WEBSSH_TOP_SNAPSHOT\\137\\137\\n\"; $T 2>/dev/null || exit 127; sleep 2; done'";
 const KEEPALIVE_NAME = new TextEncoder().encode('keepalive@openssh.com');
 
 export class SSHSession {

From 180a4f2400b4227a021e7ff2840dc9660f86be0c Mon Sep 17 00:00:00 2001
From: cmliu <cmliu@users.noreply.github.com>
Date: Thu, 30 Jul 2026 02:23:27 +0800
Subject: [PATCH 4/4] =?UTF-8?q?feat:=20=E6=9B=B4=E6=96=B0=E8=BF=9B?=
 =?UTF-8?q?=E7=A8=8B=E7=9B=91=E6=8E=A7=E5=91=BD=E4=BB=A4=E4=BB=A5=E6=94=AF?=
 =?UTF-8?q?=E6=8C=81=E6=9B=B4=E5=A5=BD=E7=9A=84=E5=AE=BD=E5=BA=A6=E5=A4=84?=
 =?UTF-8?q?=E7=90=86=EF=BC=8C=E7=A1=AE=E4=BF=9D=E8=B7=A8=E5=B9=B3=E5=8F=B0?=
 =?UTF-8?q?=E5=85=BC=E5=AE=B9=E6=80=A7?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/backend/session.ts | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/backend/session.ts b/src/backend/session.ts
index a50db22..cf0b733 100644
--- a/src/backend/session.ts
+++ b/src/backend/session.ts
@@ -76,13 +76,15 @@ const PROCESS_SNAPSHOT_MARKER = '__CF_WEBSSH_TOP_SNAPSHOT__';
 // but on FreeBSD `-n 1` means "show 1 process" and `-w` is unsupported — so the previous
 // Linux-only fallback chain silently truncated FreeBSD output to a single process row.
 // `-c` is required on Linux/macOS because their top defaults to showing just the program name;
-// FreeBSD top shows the full command line by default. `-w` is omitted on Linux because procps-ng
-// batch mode defaults to unlimited width (capping it at 512 would truncate long java/node args).
-// Dispatch on `uname -s` so each platform gets the correct flags:
-//   Linux:    top -b -c -n 1            (batch, full command line, 1 iteration)
+// FreeBSD top shows the full command line by default.
+// Width handling: without a tty, top (both procps and busybox) defaults to a narrow width and
+// truncates long command lines with a '+' marker. procps supports `-w 0` (unlimited); busybox
+// rejects `-w` and falls back to the plain form, but honors the COLUMNS env var — so we export
+// COLUMNS=4096 and use a fallback chain on Linux to cover both implementations.
+//   Linux:    top -b -c -n 1 -w 0  ||  top -b -c -n 1  ||  top -b -n 1
 //   FreeBSD:  top -b -a -d 1            (batch, all processes, 1 iteration)
 //   macOS:    top -l 1 -c -n 0 -s 0     (1 log sample, full command line, all processes, no delay)
-const PROCESS_MONITOR_COMMAND = "LC_ALL=C LANG=C sh -c 'os=$(uname -s 2>/dev/null || echo Linux); case \"$os\" in FreeBSD) T=\"top -b -a -d 1\";; Darwin) T=\"top -l 1 -c -n 0 -s 0\";; *) T=\"top -b -c -n 1\";; esac; while :; do printf \"\\137\\137CF_WEBSSH_TOP_SNAPSHOT\\137\\137\\n\"; $T 2>/dev/null || exit 127; sleep 2; done'";
+const PROCESS_MONITOR_COMMAND = "LC_ALL=C LANG=C sh -c 'os=$(uname -s 2>/dev/null || echo Linux); export COLUMNS=4096; while :; do printf \"\\137\\137CF_WEBSSH_TOP_SNAPSHOT\\137\\137\\n\"; case \"$os\" in FreeBSD) top -b -a -d 1 2>/dev/null || exit 127;; Darwin) top -l 1 -c -n 0 -s 0 2>/dev/null || exit 127;; *) top -b -c -n 1 -w 0 2>/dev/null || top -b -c -n 1 2>/dev/null || top -b -n 1 2>/dev/null || exit 127;; esac; sleep 2; done'";
 const KEEPALIVE_NAME = new TextEncoder().encode('keepalive@openssh.com');
 
 export class SSHSession {