feat: adopt lackeyjb/playwright-skill (MIT verbatim fork) + deps target

Browser automation + UI testing skill forked verbatim from
github.com/lackeyjb/playwright-skill (MIT, 2458 stars, active through
Dec 2025). LICENSE preserved in skill dir with attribution footer added
to SKILL.md.

Bundle contents (from upstream):
  playwright-skill/SKILL.md
  playwright-skill/API_REFERENCE.md
  playwright-skill/run.js       (universal executor with module resolution)
  playwright-skill/package.json
  playwright-skill/lib/helpers.js (detectDevServers, safeClick, safeType,
                                   takeScreenshot, handleCookieBanner,
                                   extractTableData, createContext with
                                   env-driven header injection)
  playwright-skill/LICENSE      (MIT, lackeyjb)

Makefile updates:
  - SKILLS extended with playwright-skill; make install symlinks it
    globally into ~/.claude/skills/
  - deps target extended to check node + npm, and to run the skill's
    own `npm run setup` (installs Playwright + Chromium ~300 MB on
    first run). Idempotent: skipped if node_modules/playwright
    already exists.

Stack fit: JavaScript Playwright aligns with Craig's TypeScript/React
frontend work. Python-side (Django) browser tests would be better served
by Anthropic's official webapp-testing skill (Python Playwright bindings),
noted in the evaluation memory but not adopted here — minimal overlap,
easy to add later if the need arises.

1 files changed, 21 insertions, 0 deletions

diff --git a/playwright-skill/LICENSE b/playwright-skill/LICENSE
new file mode 100644
index 0000000..5d40ba0
--- /dev/null
+++ b/playwright-skill/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 lackeyjb
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.