diff --git a/README.md b/README.md
index 81bb347..fa528e8 100644
--- a/README.md
+++ b/README.md
@@ -43,9 +43,9 @@ real interface and feature state
 Pin Direct as a development dependency:
 
 ```sh
-bun add --dev @hraness/direct@0.7.16
+bun add --dev @hraness/direct@0.7.17
 # or
-npm install --save-dev @hraness/direct@0.7.16
+npm install --save-dev @hraness/direct@0.7.17
 ```
 
 Keep Direct in `devDependencies`. A production entry must not import Direct,
@@ -58,7 +58,7 @@ composition. It requires Git and Bun 1.3.14, then downloads the source and its
 development dependencies:
 
 ```sh
-git clone --branch v0.7.16 --depth 1 https://github.com/hraness/direct.git
+git clone --branch v0.7.17 --depth 1 https://github.com/hraness/direct.git
 cd direct
 bun install --frozen-lockfile --ignore-scripts
 bun run example:direct
@@ -132,9 +132,9 @@ claim separate as `direct` evidence.
 Install Direct's single bundled skill from the public repository:
 
 ```sh
-npx skills add hraness/direct#v0.7.16
+npx skills add hraness/direct#v0.7.17
 # or
-bunx skills add hraness/direct#v0.7.16
+bunx skills add hraness/direct#v0.7.17
 ```
 
 The skill is invoked as `$direct`. It routes installation, adoption, and
@@ -148,7 +148,7 @@ Copy this prompt into Codex, Claude Code, or another coding agent:
 
 ```text
 Use $direct to install hraness/direct from
-the npm registry at the exact 0.7.16 version. Follow the repository README, add
+the npm registry at the exact 0.7.17 version. Follow the repository README, add
 `@hraness/direct` to devDependencies only, and verify that the production
 dependency graph excludes Direct. Do not add a fixture composition until I
 ask.
@@ -164,7 +164,7 @@ Pin the public npm package to an exact immutable version:
 ```json
 {
   "devDependencies": {
-    "@hraness/direct": "0.7.16"
+    "@hraness/direct": "0.7.17"
   }
 }
 ```
@@ -186,8 +186,8 @@ quiescence, coverage claims, cleanup, and emitted production boundaries. The
 package smoke test keeps that future packaged copy byte-identical to the
 repository skill.
 
-Prefer `npx skills add hraness/direct#v0.7.16` or
-`bunx skills add hraness/direct#v0.7.16` for runner discovery. You can also copy
+Prefer `npx skills add hraness/direct#v0.7.17` or
+`bunx skills add hraness/direct#v0.7.17` for runner discovery. You can also copy
 or link that one skill directory into a runner's configured location, then
 invoke `$direct`. Package installation leaves the skill inert: it does not run
 a `postinstall` hook or edit repository or user configuration.
diff --git a/dist/tooling/bombadil.js b/dist/tooling/bombadil.js
index 079bd53..bec85ba 100644
--- a/dist/tooling/bombadil.js
+++ b/dist/tooling/bombadil.js
@@ -1469,8 +1469,8 @@ class LiveChromeDownloadRenameRetry extends Error {
   completion;
   constructor(completion) {
     super("Chrome download renamed during live artifact inspection");
-    this.completion = completion;
     this.name = "LiveChromeDownloadRenameRetry";
+    this.completion = completion;
   }
 }
 
diff --git a/docs/adoption.md b/docs/adoption.md
index edb0a81..7cf9dd0 100644
--- a/docs/adoption.md
+++ b/docs/adoption.md
@@ -3,8 +3,8 @@
 Add Direct after identifying the product behavior and external boundary under review. Do not begin by designing fixtures around a provider SDK.
 
 The repository carries one `$direct` Agent Skill under `skills/direct`.
-Install it with `npx skills add hraness/direct#v0.7.16` or
-`bunx skills add hraness/direct#v0.7.16`, or copy that directory into the runner's
+Install it with `npx skills add hraness/direct#v0.7.17` or
+`bunx skills add hraness/direct#v0.7.17`, or copy that directory into the runner's
 discovery location. Invoke `$direct` for installation, adoption, and
 verification work. Skill installation is independent from library package
 installation and does not activate Direct in a product.
diff --git a/docs/publishing.md b/docs/publishing.md
index 015d362..4929d7f 100644
--- a/docs/publishing.md
+++ b/docs/publishing.md
@@ -62,8 +62,8 @@ cookie, one-time password, recovery code, or write token to GitHub.
    `v<package.json version>`.
 
    ```sh
-   git tag v0.7.16
-   git push origin refs/tags/v0.7.16
+   git tag v0.7.17
+   git push origin refs/tags/v0.7.17
    ```
 
 3. Wait for **Release**. The workflow runs these boundaries in order:
@@ -123,7 +123,7 @@ Merge the fix to `main`, then dispatch **Release** from current `main` with
 the exact existing stable tag:
 
 ```sh
-gh workflow run release.yml --ref main -f tag=v0.7.16
+gh workflow run release.yml --ref main -f tag=v0.7.17
 ```
 
 The recovery path skips npm publication. It accepts only the newest stable
diff --git a/docs/verification.md b/docs/verification.md
index 77bce6a..664eef7 100644
--- a/docs/verification.md
+++ b/docs/verification.md
@@ -10,8 +10,8 @@ definition with `parseDefinitionCoverageSnapshot` so a valid but stale catalog
 cannot be mistaken for the catalog under review.
 
 The repository carries one `$direct` Agent Skill under `skills/direct`.
-Install it with `npx skills add hraness/direct#v0.7.16` or
-`bunx skills add hraness/direct#v0.7.16`, or copy that directory into the runner's
+Install it with `npx skills add hraness/direct#v0.7.17` or
+`bunx skills add hraness/direct#v0.7.17`, or copy that directory into the runner's
 discovery location. Invoke `$direct` for the workflow below. The skill is
 independent from library package installation and structures the audit; it
 does not turn deterministic evidence into proof of a substituted live system.
diff --git a/package.json b/package.json
index 580ab31..b760ac1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hraness/direct",
-  "version": "0.7.16",
+  "version": "0.7.17",
   "description": "A TypeScript harness for deterministic frontend testing and development with repeatable scenarios, local fixtures, and browser verification for coding agents.",
   "license": "MIT",
   "type": "module",
diff --git a/scripts/npm-publish-workflow.test.ts b/scripts/npm-publish-workflow.test.ts
index e3e3c55..db96df6 100644
--- a/scripts/npm-publish-workflow.test.ts
+++ b/scripts/npm-publish-workflow.test.ts
@@ -341,7 +341,7 @@ import { isUtf8ByteLengthAtMost } from "./utf8-byte-boundary.js";
       readonly version?: unknown;
     };
     expect(manifest).toEqual(expect.objectContaining({
-      version: "0.7.16",
+      version: "0.7.17",
       description: "A TypeScript harness for deterministic frontend testing and development with repeatable scenarios, local fixtures, and browser verification for coding agents.",
       keywords: [
         "frontend-development",
@@ -567,7 +567,7 @@ import { isUtf8ByteLengthAtMost } from "./utf8-byte-boundary.js";
     const binaryDirectory = join(directory, "bin");
     const commandLog = join(directory, "commands.log");
     const publishMarker = join(directory, "published.txt");
-    const tarball = join(directory, "hraness-direct-0.7.16.tgz");
+    const tarball = join(directory, "hraness-direct-0.7.17.tgz");
     const metadata = join(directory, "npm-pack.json");
     const digest = join(directory, "npm-package.sha256");
     const sourceSha = "b".repeat(40);
@@ -585,7 +585,7 @@ import { isUtf8ByteLengthAtMost } from "./utf8-byte-boundary.js";
         writeFile(metadata, "reviewed metadata fixture\n", "utf8"),
         writeFile(digest, "reviewed digest fixture\n", "utf8"),
       ]);
-      await writeFile(gitStub, `#!/bin/bash\nset -euo pipefail\nprintf 'git %s\\n' "$*" >> "$COMMAND_LOG"\ncase "$*" in\n  *"rev-parse refs/heads/main"*) printf '%s\\n' "$DEFAULT_SHA" ;;\n  *"rev-parse refs/tags/v0.7.16^{commit}"*) printf '%s\\n' "$TAG_SHA" ;;\n  *"merge-base --is-ancestor"*) [[ "$ANCESTRY_STATE" == ancestor ]] ;;\n  *"tag --list v*"*) printf '%s\\n' "$REMOTE_TAGS" ;;\nesac\n`, "utf8");
+      await writeFile(gitStub, `#!/bin/bash\nset -euo pipefail\nprintf 'git %s\\n' "$*" >> "$COMMAND_LOG"\ncase "$*" in\n  *"rev-parse refs/heads/main"*) printf '%s\\n' "$DEFAULT_SHA" ;;\n  *"rev-parse refs/tags/v0.7.17^{commit}"*) printf '%s\\n' "$TAG_SHA" ;;\n  *"merge-base --is-ancestor"*) [[ "$ANCESTRY_STATE" == ancestor ]] ;;\n  *"tag --list v*"*) printf '%s\\n' "$REMOTE_TAGS" ;;\nesac\n`, "utf8");
       await writeFile(sha256Stub, `#!/bin/bash\nset -euo pipefail\nprintf 'sha256sum %s\\n' "$*" >> "$COMMAND_LOG"\ncase "$1" in\n  "$TARBALL") value="$EXPECTED_ARCHIVE_SHA256" ;;\n  "$METADATA") value="$EXPECTED_METADATA_SHA256" ;;\n  "$DIGEST") value="$EXPECTED_DIGEST_SHA256" ;;\n  *) echo "unexpected hash target: $1" >&2; exit 1 ;;\nesac\nprintf '%s  %s\\n' "$value" "$1"\n`, "utf8");
       await writeFile(npmStub, `#!/bin/bash\nset -euo pipefail\nprintf 'npm %s\\n' "$*" >> "$COMMAND_LOG"\nif [[ "\${1-}" == view ]]; then\n  printf '%s\\n' "$PUBLISHED_VERSIONS_JSON"\n  exit 0\nfi\nprintf 'published\\n' > "$PUBLISH_MARKER"\n`, "utf8");
       await Promise.all([chmod(gitStub, 0o755), chmod(npmStub, 0o755), chmod(sha256Stub, 0o755)]);
@@ -601,15 +601,15 @@ import { isUtf8ByteLengthAtMost } from "./utf8-byte-boundary.js";
         EXPECTED_DIGEST_SHA256: digestSha256,
         EXPECTED_METADATA_SHA256: metadataSha256,
         EXPECTED_SOURCE_SHA: sourceSha,
-        EXPECTED_VERSION: "0.7.16",
-        GITHUB_REF: "refs/tags/v0.7.16",
+        EXPECTED_VERSION: "0.7.17",
+        GITHUB_REF: "refs/tags/v0.7.17",
         GITHUB_REPOSITORY: "hraness/direct",
         GITHUB_SHA: sourceSha,
         METADATA: metadata,
         PATH: `${binaryDirectory}:${process.env.PATH ?? ""}`,
-        PUBLISHED_VERSIONS_JSON: '["0.7.4","0.7.5","0.7.6","0.7.7","0.7.8","0.7.9","0.7.10","0.7.11","0.7.12","0.7.13","0.7.14","0.7.15"]',
+        PUBLISHED_VERSIONS_JSON: '["0.7.4","0.7.5","0.7.6","0.7.7","0.7.8","0.7.9","0.7.10","0.7.11","0.7.12","0.7.13","0.7.14","0.7.15","0.7.16"]',
         PUBLISH_MARKER: publishMarker,
-        REMOTE_TAGS: "v0.7.4\nv0.7.5\nv0.7.6\nv0.7.7\nv0.7.8\nv0.7.9\nv0.7.10\nv0.7.11\nv0.7.12\nv0.7.13\nv0.7.14\nv0.7.15\nv0.7.16",
+        REMOTE_TAGS: "v0.7.4\nv0.7.5\nv0.7.6\nv0.7.7\nv0.7.8\nv0.7.9\nv0.7.10\nv0.7.11\nv0.7.12\nv0.7.13\nv0.7.14\nv0.7.15\nv0.7.16\nv0.7.17",
         RUNNER_TEMP: directory,
         TAG_SHA: sourceSha,
         TARBALL: tarball,
@@ -640,7 +640,7 @@ import { isUtf8ByteLengthAtMost } from "./utf8-byte-boundary.js";
       });
       expect(moved.exitCode).not.toBe(0);
       expect(`${moved.stdout}${moved.stderr}`).toContain(
-        "Tag v0.7.16 changed after artifact verification",
+        "Tag v0.7.17 changed after artifact verification",
       );
       expect(await Bun.file(publishMarker).exists()).toBe(false);
 
@@ -651,18 +651,18 @@ import { isUtf8ByteLengthAtMost } from "./utf8-byte-boundary.js";
       });
       expect(detached.exitCode).not.toBe(0);
       expect(`${detached.stdout}${detached.stderr}`).toContain(
-        "Tag v0.7.16 is no longer reachable from main",
+        "Tag v0.7.17 is no longer reachable from main",
       );
       expect(await Bun.file(publishMarker).exists()).toBe(false);
 
       await rm(commandLog, { force: true });
       const superseded = await runWorkflowScript(script, {
         ...baseEnvironment,
-        REMOTE_TAGS: "v0.7.4\nv0.7.5\nv0.7.6\nv0.7.7\nv0.7.8\nv0.7.9\nv0.7.10\nv0.7.11\nv0.7.12\nv0.7.13\nv0.7.14\nv0.7.15\nv0.7.16\nv0.7.17",
+        REMOTE_TAGS: "v0.7.4\nv0.7.5\nv0.7.6\nv0.7.7\nv0.7.8\nv0.7.9\nv0.7.10\nv0.7.11\nv0.7.12\nv0.7.13\nv0.7.14\nv0.7.15\nv0.7.16\nv0.7.17\nv0.7.18",
       });
       expect(superseded.exitCode).not.toBe(0);
       expect(`${superseded.stdout}${superseded.stderr}`).toContain(
-        "Tag v0.7.16 is not the newest stable tag v0.7.17",
+        "Tag v0.7.17 is not the newest stable tag v0.7.18",
       );
       expect(await readFile(commandLog, "utf8")).not.toContain("npm publish");
       expect(await Bun.file(publishMarker).exists()).toBe(false);
@@ -670,11 +670,11 @@ import { isUtf8ByteLengthAtMost } from "./utf8-byte-boundary.js";
       await rm(commandLog, { force: true });
       const staleVersion = await runWorkflowScript(script, {
         ...baseEnvironment,
-        PUBLISHED_VERSIONS_JSON: '["0.7.4","0.7.17"]',
+        PUBLISHED_VERSIONS_JSON: '["0.7.4","0.7.18"]',
       });
       expect(staleVersion.exitCode).not.toBe(0);
       expect(`${staleVersion.stdout}${staleVersion.stderr}`).toContain(
-        "@hraness/direct@0.7.16 is not newer than published stable 0.7.17",
+        "@hraness/direct@0.7.17 is not newer than published stable 0.7.18",
       );
       expect(await Bun.file(publishMarker).exists()).toBe(false);
 
diff --git a/skills/direct/references/install.md b/skills/direct/references/install.md
index afa0eb7..9715aa5 100644
--- a/skills/direct/references/install.md
+++ b/skills/direct/references/install.md
@@ -21,9 +21,9 @@ global `direct` CLI.
 For a new installation, pin the reviewed public release:
 
 ```sh
-bun add --dev @hraness/direct@0.7.16
+bun add --dev @hraness/direct@0.7.17
 # or, in an npm project
-npm install --save-dev @hraness/direct@0.7.16
+npm install --save-dev @hraness/direct@0.7.17
 ```
 
 The equivalent manifest entry is:
@@ -31,7 +31,7 @@ The equivalent manifest entry is:
 ```json
 {
   "devDependencies": {
-    "@hraness/direct": "0.7.16"
+    "@hraness/direct": "0.7.17"
   }
 }
 ```
@@ -43,8 +43,8 @@ If the task starts with skill installation rather than a loaded skill, install
 the single repository skill with either command:
 
 ```sh
-npx skills add hraness/direct#v0.7.16
-bunx skills add hraness/direct#v0.7.16
+npx skills add hraness/direct#v0.7.17
+bunx skills add hraness/direct#v0.7.17
 ```
 
 Restart or reload the agent runner if it does not discover newly installed
diff --git a/src/tooling/bombadil-runner.ts b/src/tooling/bombadil-runner.ts
index 09aa070..c3549cd 100644
--- a/src/tooling/bombadil-runner.ts
+++ b/src/tooling/bombadil-runner.ts
@@ -813,17 +813,18 @@ class BombadilArtifactPolicyError extends Error {
 }
 
 class LiveChromeDownloadRenameRetry extends Error {
-  public constructor(
-    public readonly completion: Readonly<{
-      device: bigint;
-      inode: bigint;
-      runId: string;
-      size: number;
-      unobserved: boolean;
-    }>,
-  ) {
+  public readonly completion: Readonly<{
+    device: bigint;
+    inode: bigint;
+    runId: string;
+    size: number;
+    unobserved: boolean;
+  }>;
+
+  public constructor(completion: LiveChromeDownloadRenameRetry["completion"]) {
     super("Chrome download renamed during live artifact inspection");
     this.name = "LiveChromeDownloadRenameRetry";
+    this.completion = completion;
   }
 }
 
diff --git a/tsconfig.json b/tsconfig.json
index e518373..fd72317 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -51,6 +51,7 @@
     "noUnusedParameters": true,
     "useUnknownInCatchVariables": true,
     "allowImportingTsExtensions": true,
+    "erasableSyntaxOnly": true,
     "isolatedModules": true,
     "skipLibCheck": true,
     "noEmit": true,