fix: AI terminal init, Shift+Tab nav, code block rendering, command filtering

- Fix AI terminal not initializing (wait for shell col visibility, remove offsetHeight guard)
- Add Shift+Tab to cycle between shell terminals
- Handle unclosed code blocks in renderContent (Shell + Studio)
- Filter irrelevant commands from history (short/non-alpha backend + expanded frontend exclude list)

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

internal/api/handlers_info.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"time"
 
@@ -553,10 +554,11 @@ func (s *Server) handleRecentCommands(w http.ResponseWriter, r *http.Request) {
 			shell = "zsh"
 		}
 		lines := strings.Split(string(data), "\n")
-		start := len(lines) - 25
+		start := len(lines) - 50
 		if start < 0 {
 			start = 0
 		}
+
 		for i := len(lines) - 1; i >= start; i-- {
 			line := strings.TrimSpace(lines[i])
 			if line == "" || strings.HasPrefix(line, "#") {
@@ -573,6 +575,15 @@ func (s *Server) handleRecentCommands(w http.ResponseWriter, r *http.Request) {
 			if line == "" {
 				continue
 			}
+
+			base := strings.Fields(line)[0]
+			if len(base) < 2 {
+				continue
+			}
+			if !regexp.MustCompile(`^[a-zA-Z@./]`).MatchString(base) {
+				continue
+			}
+
 			entries = append(entries, cmdEntry{Cmd: line, Shell: shell})
 		}
 	}

web/src/components/Dashboard.jsx

@@ -93,13 +93,14 @@ export default function Dashboard({ api, refreshRef }) {
   const minimax = (quota || []).find(p => p.name === 'minimax')
   const zai = (quota || []).find(p => p.name === 'zai')
 
-  const EXCLUDE_CMDS = ['ls', 'cd', 'pwd', 'clear', 'exit', 'history']
+  const EXCLUDE_CMDS = ['ls', 'cd', 'pwd', 'clear', 'exit', 'history', 'cat', 'echo', 'grep', 'export', 'alias', 'unalias', 'set', 'unset', 'source', '.', 'fg', 'bg', 'jobs', 'wait', 'true', 'false', 'yes', 'sleep', 'date', 'whoami', 'id', 'uname', 'hostname', 'uptime', 'df', 'free', 'top', 'htop', 'nano', 'vi', 'vim', 'less', 'more', 'tail', 'head', 'man', 'info', 'which', 'whereis', 'type', 'command', 'hash', 'builtin', 'help']
 
   const topCmds = (() => {
     const counts = {}
     for (const c of recentCmds) {
       const base = c.cmd.split(/\s+/)[0]
-      if (EXCLUDE_CMDS.includes(base) || !base) continue
+      if (!base || base.length < 2 || EXCLUDE_CMDS.includes(base)) continue
+      if (!/^[a-zA-Z@.\/]/.test(base)) continue
       counts[base] = (counts[base] || 0) + 1
     }
     return Object.entries(counts)

web/src/components/Shell.jsx

@@ -28,7 +28,16 @@ function renderContent(text) {
     lastIndex = match.index + full.length
   }
   if (lastIndex < text.length) {
-    parts.push({ type: 'text', content: text.slice(lastIndex) })
+    const remaining = text.slice(lastIndex)
+    const openBlock = remaining.match(/```(\w*)\n?([\s\S]*)$/)
+    if (openBlock) {
+      if (openBlock.index > 0) {
+        parts.push({ type: 'text', content: remaining.slice(0, openBlock.index) })
+      }
+      parts.push({ type: 'code', lang: openBlock[1] || '', content: openBlock[2] || '' })
+    } else {
+      parts.push({ type: 'text', content: remaining })
+    }
   }
   return parts
 }
@@ -308,7 +317,7 @@ export default function Shell({ api }) {
     if (tabsRef.current[tabId]) return
 
     const container = document.getElementById(`terminal-${tabId}`)
-    if (!container || container.offsetHeight === 0) return
+    if (!container) return
 
     const s = settingsRef.current
     const { term, fitAddon } = createTerminal(container, {
@@ -368,7 +377,12 @@ export default function Shell({ api }) {
     if (!tab) return
 
     const tryInit = (attempt) => {
-      if (attempt > 10) return
+      if (attempt > 20) return
+      const shellCol = document.querySelector('.shell-terminal-col')
+      if (!shellCol || shellCol.offsetParent === null) {
+        setTimeout(() => tryInit(attempt + 1), 150)
+        return
+      }
       const container = document.getElementById(`terminal-${tab.id}`)
       if (!container || container.offsetHeight === 0) {
         setTimeout(() => tryInit(attempt + 1), 100)
@@ -404,7 +418,17 @@ export default function Shell({ api }) {
   useEffect(() => {
     const onKey = (e) => {
       if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return
-      if (!e.altKey) return
+      if (!e.altKey && !(e.key === 'Tab' && e.shiftKey)) return
+
+      if (e.key === 'Tab' && e.shiftKey) {
+        const shellTab = document.querySelector('.shell-layout')
+        if (!shellTab || shellTab.closest('.tab-hidden')) return
+        e.preventDefault()
+        const idx = tabs.findIndex(t => t.id === activeTab)
+        const next = (idx + 1) % tabs.length
+        setActiveTab(tabs[next].id)
+        return
+      }
 
       const num = parseInt(e.key)
       if (num >= 1 && num <= tabs.length) {

web/src/components/Studio.jsx

@@ -47,7 +47,16 @@ function renderContent(text) {
     lastIndex = match.index + full.length
   }
   if (lastIndex < text.length) {
-    parts.push({ type: 'text', content: text.slice(lastIndex) })
+    const remaining = text.slice(lastIndex)
+    const openBlock = remaining.match(/```(\w*)\n?([\s\S]*)$/)
+    if (openBlock) {
+      if (openBlock.index > 0) {
+        parts.push({ type: 'text', content: remaining.slice(0, openBlock.index) })
+      }
+      parts.push({ type: 'code', lang: openBlock[1] || '', content: openBlock[2] || '' })
+    } else {
+      parts.push({ type: 'text', content: remaining })
+    }
   }
   return parts
 }