🔧 Add Claude Code project settings and fix gitignore 🔧

- .claude/settings.json: permission allowlist for docker buildx/ps/run/pull,
make check/test/build, curl fetches, and the project gitcommit invocation;
reduces per-command permission prompts during development
- .gitignore: expand Claude Code ignore patterns to cover all runtime and
personal files (backups/, cache/, file-history/, history.jsonl, projects/,
statsFile, *.lock) per project_files.md rules; settings.json is a
committable project config and remains tracked

.claude/
.gitignore

.claude/settings.json

@@ -0,0 +1,22 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(docker buildx *)",
+      "Bash(docker image *)",
+      "Bash(docker images *)",
+      "Bash(docker system df *)",
+      "Bash(docker stats --no-stream *)",
+      "Bash(docker ps *)",
+      "Bash(docker run --rm *)",
+      "Bash(docker info *)",
+      "Bash(docker pull *)",
+      "Bash(make check *)",
+      "Bash(make test *)",
+      "Bash(make build *)",
+      "Bash(curl -fsSL *)",
+      "Bash(curl -fsSo *)",
+      "Bash(curl -fsSLI *)",
+      "Bash(gitcommit --dir /root/Projects/github/dockersrc/go all)"
+    ]
+  }
+}

.gitignore

@@ -112,6 +112,12 @@ Session.vim
 ### AI tool local configs (personal settings, never commit) ###
 # Claude Code
 .claude/settings.local.json
+.claude/backups/
+.claude/cache/
+.claude/file-history/
+.claude/history.jsonl
+.claude/projects/
+.claude/statsFile
 .claude/*.lock
 
 # Cursor