Submit actual develop page

Signed-off-by: nopeitsnothing <no@anonymousplanet.org>

docs/code/develop.md

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+# Development
+
+??? Note "How the pipeline works"
+
+    **Automatic PDF Generation:** - Builds both light and dark mode PDFs from MkDocs source
+    **SHA256 Hash Generation:** - Creates hash files for integrity verification
+    **GPG Signature Signing:** - Signs all PDFs and hash files with repository GPG key
+    **VirusTotal Scanning:** - Automatically scans PDFs and updates release notes
+    **Release Automation:** - Packages everything into GitHub releases
+
+## Architecture
+
+### Build PDF Workflow (`build-sign-release.yml`)
+
+!!! Note "Steps"
+
+    - Checkout repository
+    - Set up Python and MkDocs Material
+    - Install Chromium browser
+    - Generate both light and dark mode PDFs with `scripts\build_guide_pdf.py`
+    - Create SHA256 and blake2 hash files in `export/`
+    - Sign all files with GPG in `export/`
+    - Upload artifacts to GitHub Actions **manually**
+
+### SHA256 Hash Verification
+
+!!! Note "**How it works**"
+
+    - Each PDF gets a unique SHA256 hash calculated at build time
+    - Hash stored in `.sha256` files alongside the PDFs
+    - Combined `sha256sum.txt` for batch verification
+
+### GPG Signature Verification
+
+**Purpose:** Verify authenticity and prevent tampering
+
+!!! Note "How it works"
+
+    - Detached signatures created for each PDF and hash file
+    - Public keys available in `/pgp/` directory
+
+**Verification command:**
+```bash
+gpg --import pgp/anonymousplanet-master.asc
+gpg --verify export/thgtoa.pdf.sig export/thgtoa.pdf
+```
+
+---
+
+*This workflow is designed for security-conscious users who need to verify the authenticity and integrity of downloaded documents.*