docs: update version refs, fix URLs, and sync dates for v1.5.2

- README: release link v1.5.0 → v1.5.2
- PROJECT-VISION: nostr-tools → nostr-crypto-utils in tech stack
- CHROME-WEB-STORE-SUBMISSION: GitHub Pages URLs → nostrkey.com
- Updated dates to February 22, 2026

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

Author: vveerrgg

README.md

@@ -3,7 +3,7 @@
 > Cross-browser Nostr key management, encrypted document vault, and identity layer.
 > Forked from [ursuscamp/nostore](https://github.com/ursuscamp/nostore) (archived Feb 2025).
 >
-> **Website:** [nostrkey.com](https://nostrkey.com) · **Current release:** [v1.5.0](https://github.com/HumanjavaEnterprises/nostrkey.browser.plugin.src/releases/tag/v1.5.0)
+> **Website:** [nostrkey.com](https://nostrkey.com) · **Current release:** [v1.5.2](https://github.com/HumanjavaEnterprises/nostrkey.browser.plugin.src/releases/tag/v1.5.2)
 
 > **NostrKey and Humanjava Enterprises Inc. do not have a cryptocurrency, token, or coin. Nor will there be one.** If anyone suggests or sells a cryptocurrency associated with this project, they are acting fraudulently. [Report scams](https://github.com/HumanjavaEnterprises/nostrkey.browser.plugin.src/issues).
 

docs_project_info/APPLE-APP-STORE-SUBMISSION.md

@@ -200,5 +200,5 @@ open apple/NostrKey.xcodeproj
 
 ---
 
-*Last updated: February 21, 2026*
+*Last updated: February 22, 2026*
 *Published by Humanjava Enterprises Inc*

docs_project_info/CHROME-WEB-STORE-SUBMISSION.md

@@ -210,7 +210,7 @@ Host permissions are required to inject the NIP-07 window.nostr API into web pag
 
 **Required:** Yes (we handle sensitive cryptographic keys)
 
-**URL:** https://humanjavaenterprises.github.io/nostrkey.browser.plugin.src/privacy.html
+**URL:** https://nostrkey.com/privacy.html
 
 **Key points included:**
 - ✅ What data we store (keys, profiles, settings)
@@ -223,7 +223,7 @@ Host permissions are required to inject the NIP-07 window.nostr API into web pag
 
 ## Terms and Conditions
 
-**URL:** https://humanjavaenterprises.github.io/nostrkey.browser.plugin.src/terms.html
+**URL:** https://nostrkey.com/terms.html
 
 **Key sections included:**
 - ✅ Extension description and scope
@@ -244,7 +244,7 @@ Host permissions are required to inject the NIP-07 window.nostr API into web pag
 
 **GitHub:** https://github.com/HumanjavaEnterprises/nostrkey.browser.plugin.src
 
-**Documentation:** https://humanjavaenterprises.github.io/nostrkey.browser.plugin.src/support.html
+**Documentation:** https://nostrkey.com/support.html
 
 ## Submission Checklist
 

docs_project_info/PROJECT-VISION.md

@@ -280,7 +280,7 @@ colab.lx7.ca verifies signature → session established
 
 | Layer | Technology | Notes |
 |-------|-----------|-------|
-| Crypto | nostr-tools + @noble/* | secp256k1, ChaCha20, PBKDF2 |
+| Crypto | nostr-crypto-utils + @noble/* | secp256k1, ChaCha20, PBKDF2 |
 | UI Framework | Vanilla JS | No framework — lightweight, CSP-safe |
 | Styling | Tailwind CSS | Utility-first |
 | Bundler | esbuild | Fast, zero-config |
@@ -361,5 +361,5 @@ MIT (inherited from original Nostore project)
 
 ---
 
-*Last updated: February 21, 2026*
+*Last updated: February 22, 2026*
 *Part of the [Lx7 Platform](https://lx7.ca)*