chore: remove SPDX-License-Identifier headers repo-wide (#977)

* chore: remove SPDX-License-Identifier headers repo-wide

The repo is uniformly MIT — root LICENSE, all six libs/*/LICENSE.md, and
every one of the 130 package.json manifests. Nothing lints, tests, or
otherwise enforces the per-file header, so it was 1,300+ lines of
duplicated licensing metadata that new files had to remember to carry.

Removes the header from the top of every source file (.ts/.tsx/.mjs/.py/
.css/.sh/.md), and from the three generators that stamped it into
generated output (both inject-env.mjs scripts and the aimock scaffold
generator) so it does not come back. Also drops it from the code samples
in the human-in-the-loop blog post.

Left alone: docs/superpowers plans and specs, which mention the header
(and the old PolyForm identifier) in prose as a record of past work.

Verified: lint/test/build green for chat, langgraph, ag-ui, render, a2ui,
telemetry; nx test scripts; website lint + test; verify-release-versions,
check-dx-coverage, verify-angular-support, and the node:test smoke specs;
all 72 touched Python files compile.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore: sweep SPDX headers off the new /hero files

#976 landed 23 files under examples/chat/angular while this PR was open;
they were written before the header was dropped and carried it in.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: blove

apps/cockpit/next.config.spec.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import { describe, expect, it } from 'vitest';
 import { nextConfig as config } from './next.config';
 

apps/cockpit/scripts/manual-spec-freshness.spec.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 //
 // Tripwire for the `*.manual.ts` tier.
 //

apps/website/content/blog/2026-06-04-human-in-the-loop-ag-ui-agents-in-angular.mdx

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import { describe, expect, it } from 'vitest';
 import { nextConfig as config } from './next.config';
 

apps/website/next.config.spec.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import { pathToFileURL } from 'node:url';
 import { describe, expect, it } from 'vitest';
 import {

apps/website/scripts/capture-screenshots.spec.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import type { InspectionResult, SearchAnalyticsRow } from './api';
 
 /** Queries ranking just off page one — the cheapest ranking wins available. */

apps/website/scripts/gsc/analysis.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import { getAccessToken } from './auth';
 
 const BASE = 'https://www.googleapis.com/webmasters/v3';

apps/website/scripts/gsc/api.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import { createSign } from 'node:crypto';
 
 const TOKEN_URL = 'https://oauth2.googleapis.com/token';

apps/website/scripts/gsc/auth.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import fs from 'node:fs';
 import path from 'node:path';
 import {

apps/website/scripts/gsc/pull.ts

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 import fs from 'node:fs';
 import path from 'node:path';
 import type { InspectionFailure, InspectionResult, SearchAnalyticsRow } from './api';