fix: add tmux to claude-dev tooling

Add tmux to the claude-dev runtime contract so persistent terminal sessions can rely on it, and make the Claude preflight patch resilient to current CLI builds so image builds keep passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

claude-dev/Dockerfile

@@ -16,6 +16,7 @@ RUN apt-get update \
       python3 \
       ripgrep \
       rsync \
+      tmux \
       unzip \
       wget \
       zip \
@@ -31,20 +32,22 @@ RUN npm install -g @anthropic-ai/claude-code
 
 RUN python3 - <<'PY'
 from pathlib import Path
+import re
 
 path = Path("/usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js")
 if not path.exists():
     raise SystemExit(f"claude cli not found: {path}")
 
 content = path.read_text()
-old = 'F8.get("https://api.anthropic.com/api/hello",{headers:K8($)}).catch((()=>!1))'
-if old not in content:
+pattern = r'let A=U7\(\),q=new URL\(A\.TOKEN_URL\),K=\[`\$\{A\.BASE_API_URL\}/api/hello`,`\$\{q\.origin\}/v1/oauth/hello`\],Y=async\(_\)=>\{try\{let \$=await I8\.get\(_,\{headers:\{"User-Agent":ey\(\)\}\}\);if\(\$\.status!==200\)return\{success:!1,error:`Failed to connect to \$\{new URL\(_\)\.hostname\}: Status \$\{\$\.status\}`\};return\{success:!0\}\}catch\(\$\)\{'
+replacement = 'return'
+patched, count = re.subn(pattern, replacement, content, count=1)
+if count != 1:
     raise SystemExit("preflight patch target not found in claude cli; refusing to build")
 
-patched = content.replace(old, "!0")
 path.write_text(patched)
 
-if old in path.read_text():
+if re.search(pattern, path.read_text()):
     raise SystemExit("preflight patch did not apply cleanly")
 
 print("Applied Claude preflight bypass patch")

claude-dev/required-tools.txt

@@ -13,4 +13,5 @@ rsync
 zip
 unzip
 make
+tmux
 claude