docs: update requesthunt auth references to device code flow

The CLI now uses a device code flow (visit URL + enter code) instead
of a generic browser approval page click.

Author: Jing-yilin

CHANGELOG.md

@@ -292,7 +292,7 @@ Migration guides for major version upgrades will be documented here.
 ## Notes
 
 ### API Keys Required
-- **requesthunt**: CLI browser auth (`requesthunt auth login`) or REQUESTHUNT_API_KEY (requesthunt.com/dashboard)
+- **requesthunt**: CLI device code auth (`requesthunt auth login`) or REQUESTHUNT_API_KEY (requesthunt.com/dashboard)
 - **twitter**: TWITTERAPI_API_KEY (twitterapi.io, ~$0.15-0.18/1k requests)
 - **logo-creator**: GEMINI_API_KEY, REMOVE_BG_API_KEY, RECRAFT_API_KEY
 - **banner-creator**: GEMINI_API_KEY (Google AI Studio)

skills/requesthunt/SKILL.md

@@ -9,13 +9,13 @@ Generate user demand research reports by collecting and analyzing real user feed
 
 ## Prerequisites
 
-Install the CLI and authenticate via browser:
+Install the CLI and authenticate:
 ```bash
 curl -fsSL https://requesthunt.com/cli | sh
 requesthunt auth login
 ```
 
-Browser auth opens an approval page — the human must click "Approve". Verify with:
+The CLI displays a verification code and opens `https://requesthunt.com/device` — the human must enter the code to approve. Verify with:
 ```bash
 requesthunt config show
 ```
@@ -122,7 +122,7 @@ requesthunt config show                                      # Check auth status
 
 ## API Info
 - **Base URL**: https://requesthunt.com
-- **Auth**: Browser login (`requesthunt auth login`) or manual API key
+- **Auth**: Device code login (`requesthunt auth login`) or manual API key
 - **Rate Limits**:
   - Free tier: 100 credits/month, 10 req/min
   - Pro tier: 2,000 credits/month, 60 req/min