fix(model): resolve a dangling link's parent before judging where it points

.oracle/orly.json

@@ -1,6 +1,6 @@
 {
   "schema_version": 1,
-  "orly_version": "0.9.0",
+  "orly_version": "0.9.1",
   "packs": [
     "universal.authoring",
     "language.zig",

README.md

@@ -199,7 +199,7 @@ Each edit activates the rule page for that file kind. A gate proves whether the
 
 `AGENTS.md` stays yours — orly writes its rules beside it and points at them from one delimited block.
 
-The last two files exist because installing a rules file is not the same as delivering it, and no runtime loads `AGENTS.orly.md` on its own. Codex and Amp auto-load `AGENTS.md`, which carries the pointer block onward. Claude Code loads `CLAUDE.md` and nothing else. opencode loads only what its `instructions` name. So orly writes the one import line each of those needs, and leaves any file you already wrote alone — a `CLAUDE.md` of your own, symlink included, is your answer to the question and orly does not touch it.
+The last two files exist because installing a rules file is not the same as delivering it, and no runtime loads `AGENTS.orly.md` on its own. Codex and Amp auto-load `AGENTS.md`, which carries the pointer block onward. Claude Code loads `CLAUDE.md` and nothing else. opencode loads only what its `instructions` name. So orly writes the one import line each of those needs, and leaves any file you already wrote alone — a `CLAUDE.md` of your own is your answer to the question and orly does not touch it — including a symlink, whether it points at your rules file, somewhere else in the repository, or at nothing yet. Only a link out of the repository is refused, because a write through it would land outside the repository you ran orly in.
 
 > [!WARNING]
 > orly refuses to replace a hook or rule page it did not write. `--force` and `--no-hooks` are the ways through. A refused run changes nothing.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@agentsfleet/orly",
-  "version": "0.9.0",
+  "version": "0.9.1",
   "description": "Repository-scoped engineering harness: renders agent rules, materialises the gates that enforce them, and proves the PR boundary \u2014 for any coding agent.",
   "license": "MIT",
   "type": "module",

src/loaders.test.ts

@@ -1,5 +1,5 @@
 import { afterEach, describe, expect, test } from "bun:test";
-import { existsSync, symlinkSync } from "node:fs";
+import { existsSync, lstatSync, symlinkSync } from "node:fs";
 import { join } from "node:path";
 
 import { cleanupTemporaryDirectories, newRepository, ROOT } from "./gates_test_support";
@@ -73,6 +73,54 @@ describe("runtime loaders", () => {
     expect(managed).not.toContain("AGENTS.md");
   });
 
+  // The block is delimited so a re-run replaces exactly what the last run
+  // wrote. What surrounds it is the repository's prose and must survive an
+  // update that changes the block's own wording — as this release does.
+  test("a stale pointer block is replaced in place, and nothing either side of it", async () => {
+    const repo = newRepository();
+    await Bun.write(join(repo, "AGENTS.md"), "# Ours\n\nkeep me\n\n<!-- orly:begin -->\nstale pointer\n<!-- orly:end -->\n\ntrailing prose\n");
+
+    const result = await installInto(repo);
+
+    expect(result.written).toContain("AGENTS.md");
+    const host = await Bun.file(join(repo, "AGENTS.md")).text();
+    expect(host).toContain("keep me");
+    expect(host).toContain("trailing prose");
+    expect(host).not.toContain("stale pointer");
+    expect(host).toContain("\n@AGENTS.orly.md\n");
+  });
+
+  // The migration path for every repository installed before the loaders
+  // existed, and for every later change to the loader's own wording: the
+  // banner is the authorship evidence, so orly's own file is orly's to refresh.
+  test("a CLAUDE.md orly wrote itself is refreshed, not left stale", async () => {
+    const repo = newRepository();
+    await Bun.write(join(repo, "CLAUDE.md"), "> **Generated by `orly`.**\n> an older loader\n\n@ELSEWHERE.md\n");
+
+    const result = await installInto(repo);
+
+    expect(result.written).toContain("CLAUDE.md");
+    const loader = await Bun.file(join(repo, "CLAUDE.md")).text();
+    expect(loader).toContain("\n@AGENTS.md\n");
+    expect(loader).not.toContain("ELSEWHERE");
+  });
+
+  // A link orly cannot resolve is still someone's deliberate wiring. Writing
+  // through it would create the file it points at, which is a decision the
+  // repository never asked orly to make.
+  test("a dangling CLAUDE.md symlink is left alone, not written through", async () => {
+    const repo = newRepository();
+    symlinkSync("nowhere.md", join(repo, "CLAUDE.md"));
+
+    const result = await installInto(repo);
+
+    expect(result.ok).toBe(true);
+    expect(result.written).not.toContain("CLAUDE.md");
+    expect(result.skipped).toContain("CLAUDE.md");
+    expect(existsSync(join(repo, "nowhere.md"))).toBe(false);
+    expect(lstatSync(join(repo, "CLAUDE.md")).isSymbolicLink()).toBe(true);
+  });
+
   test("a repository's own CLAUDE.md is reported, never edited", async () => {
     const repo = newRepository();
     const theirs = "# Our own Claude instructions\n";

src/model.ts

@@ -83,11 +83,21 @@ function isSymbolicLink(path: string): boolean {
 
 // A dangling link resolves nowhere; judge it by where it points, not where it
 // lands, so a link to a not-yet-created file outside the repository still fails.
+//
+// The directory holding it is resolved too, and has to be: the caller compares
+// this against a realpath'd root, and a lexical answer put a link pointing
+// squarely INSIDE the repository on the wrong side of that comparison wherever
+// the repository itself sits behind a symlink — which is every macOS temporary
+// directory, and plenty of real checkouts. The refusal even named the file it
+// was about to protect, one path component at a time.
+//
+// Resolving the parent cannot fail here: this runs only where the destination
+// itself lstat'd as a link, which a missing parent makes impossible.
 function safeRealpath(path: string): string | undefined {
   try {
     return realpathSync(path);
   } catch {
-    return resolve(dirname(path), readlinkSync(path));
+    return resolve(realpathSync(dirname(path)), readlinkSync(path));
   }
 }