test: Phase 1 — 添加 8 个纯函数测试文件 (+134 tests)

- errors.test.ts: 28 tests (isAbortError, toError, errorMessage, getErrnoCode, isFsInaccessible, classifyAxiosError 等)
- shellRuleMatching.test.ts: 22 tests (permissionRuleExtractPrefix, hasWildcards, matchWildcardPattern, parsePermissionRule 等)
- argumentSubstitution.test.ts: 18 tests (parseArguments, parseArgumentNames, generateProgressiveArgumentHint, substituteArguments)
- CircularBuffer.test.ts: 12 tests (add, addAll, getRecent, toArray, clear, length)
- sanitization.test.ts: 14 tests (partiallySanitizeUnicode, recursivelySanitizeUnicode)
- slashCommandParsing.test.ts: 8 tests (parseSlashCommand)
- contentArray.test.ts: 6 tests (insertBlockAfterToolResults)
- objectGroupBy.test.ts: 5 tests (objectGroupBy)

总计：781 tests / 40 files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/utils/permissions/__tests__/shellRuleMatching.test.ts

@@ -0,0 +1,145 @@
+import { describe, expect, test } from "bun:test";
+import {
+  permissionRuleExtractPrefix,
+  hasWildcards,
+  matchWildcardPattern,
+  parsePermissionRule,
+  suggestionForExactCommand,
+  suggestionForPrefix,
+} from "../shellRuleMatching";
+
+// ─── permissionRuleExtractPrefix ────────────────────────────────────────
+
+describe("permissionRuleExtractPrefix", () => {
+  test("extracts prefix from legacy :* syntax", () => {
+    expect(permissionRuleExtractPrefix("npm:*")).toBe("npm");
+  });
+
+  test("extracts multi-word prefix", () => {
+    expect(permissionRuleExtractPrefix("git commit:*")).toBe("git commit");
+  });
+
+  test("returns null for non-prefix rule", () => {
+    expect(permissionRuleExtractPrefix("npm install")).toBeNull();
+  });
+
+  test("returns null for empty string", () => {
+    expect(permissionRuleExtractPrefix("")).toBeNull();
+  });
+
+  test("returns null for wildcard without colon", () => {
+    expect(permissionRuleExtractPrefix("npm *")).toBeNull();
+  });
+});
+
+// ─── hasWildcards ───────────────────────────────────────────────────────
+
+describe("hasWildcards", () => {
+  test("returns true for unescaped wildcard", () => {
+    expect(hasWildcards("git *")).toBe(true);
+  });
+
+  test("returns false for legacy :* syntax", () => {
+    expect(hasWildcards("npm:*")).toBe(false);
+  });
+
+  test("returns false for escaped wildcard", () => {
+    expect(hasWildcards("git \\*")).toBe(false);
+  });
+
+  test("returns true for * with even backslashes", () => {
+    expect(hasWildcards("git \\\\*")).toBe(true);
+  });
+
+  test("returns false for no wildcards", () => {
+    expect(hasWildcards("npm install")).toBe(false);
+  });
+
+  test("returns false for empty string", () => {
+    expect(hasWildcards("")).toBe(false);
+  });
+});
+
+// ─── matchWildcardPattern ───────────────────────────────────────────────
+
+describe("matchWildcardPattern", () => {
+  test("matches simple wildcard", () => {
+    expect(matchWildcardPattern("git *", "git add")).toBe(true);
+  });
+
+  test("matches bare command when pattern ends with space-wildcard", () => {
+    expect(matchWildcardPattern("git *", "git")).toBe(true);
+  });
+
+  test("rejects non-matching command", () => {
+    expect(matchWildcardPattern("git *", "npm install")).toBe(false);
+  });
+
+  test("matches middle wildcard", () => {
+    expect(matchWildcardPattern("git * --verbose", "git add --verbose")).toBe(true);
+  });
+
+  test("handles escaped asterisk as literal", () => {
+    expect(matchWildcardPattern("echo \\*", "echo *")).toBe(true);
+    expect(matchWildcardPattern("echo \\*", "echo hello")).toBe(false);
+  });
+
+  test("case-insensitive matching", () => {
+    expect(matchWildcardPattern("Git *", "git add", true)).toBe(true);
+  });
+
+  test("exact match without wildcards", () => {
+    expect(matchWildcardPattern("npm install", "npm install")).toBe(true);
+    expect(matchWildcardPattern("npm install", "npm update")).toBe(false);
+  });
+
+  test("handles regex special characters in pattern", () => {
+    expect(matchWildcardPattern("echo (hello)", "echo (hello)")).toBe(true);
+  });
+});
+
+// ─── parsePermissionRule ────────────────────────────────────────────────
+
+describe("parsePermissionRule", () => {
+  test("parses exact command", () => {
+    const result = parsePermissionRule("npm install");
+    expect(result).toEqual({ type: "exact", command: "npm install" });
+  });
+
+  test("parses legacy prefix syntax", () => {
+    const result = parsePermissionRule("npm:*");
+    expect(result).toEqual({ type: "prefix", prefix: "npm" });
+  });
+
+  test("parses wildcard pattern", () => {
+    const result = parsePermissionRule("git *");
+    expect(result).toEqual({ type: "wildcard", pattern: "git *" });
+  });
+
+  test("escaped wildcard is treated as exact", () => {
+    const result = parsePermissionRule("echo \\*");
+    expect(result.type).toBe("exact");
+  });
+});
+
+// ─── suggestionForExactCommand ──────────────────────────────────────────
+
+describe("suggestionForExactCommand", () => {
+  test("creates addRules suggestion", () => {
+    const result = suggestionForExactCommand("Bash", "npm install");
+    expect(result).toHaveLength(1);
+    expect(result[0]!.type).toBe("addRules");
+    expect(result[0]!.rules[0]!.toolName).toBe("Bash");
+    expect(result[0]!.rules[0]!.ruleContent).toBe("npm install");
+    expect(result[0]!.behavior).toBe("allow");
+  });
+});
+
+// ─── suggestionForPrefix ────────────────────────────────────────────────
+
+describe("suggestionForPrefix", () => {
+  test("creates prefix suggestion with :*", () => {
+    const result = suggestionForPrefix("Bash", "npm");
+    expect(result[0]!.rules[0]!.ruleContent).toBe("npm:*");
+  });
+});