Add Brave CDP automation, replace Oracle browser mode

Connects to user's running Brave via Chrome DevTools Protocol
to automate ChatGPT interaction. Uses puppeteer-core to open a
tab, send the prompt, wait for response, and extract the result.

No cookies, no separate profiles, no copy/paste. Just connects
to the browser where the user is already logged in.

One-time setup: relaunch Brave with --remote-debugging-port=9222

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

node_modules/progress/Makefile

@@ -0,0 +1,8 @@
+
+EXAMPLES = $(foreach EXAMPLE, $(wildcard examples/*.js), $(EXAMPLE))
+
+.PHONY: test
+test: $(EXAMPLES)
+
+.PHONY: $(EXAMPLES)
+$(EXAMPLES): ; node $@ && echo