ci: refactoring some things and removing others

Lots of source additions here from long-standing notes over the past few
months. Squashed to make it neater than 219 commits.

- bump version to v1.2.4, Jun 2026
- expand Tor section with new "Traffic analysis and the limits of Tor" subsection
  guard node persistence, website fingerprinting, and a practical breakdown of
  when Tor is and is not sufficient
- expand hardware/firmware threat section with new subsections on firmware
  implants, USB attack hardware (O.MG Cable, Rubber Ducky), Evil Maid attacks,
  supply chain compromise, and a physical inspection checklist
- rename "Removing Metadata from Files/Documents/Pictures" section to "Metadata
  auditing"; add reference table of tools by file type; expand EXIF/XMP coverage,
  PDF metadata (font fingerprinting), and DOCX revision history with real-world
  source identification cases; restructure subsections
- add introductory paragraph to "Your Metadata" section
- add new appendix B8: operational security failure case studies with common
  threads
- add new appendix B9: post-quantum cryptography covering HNDL threat, NIST PQC
  standards, Signal's PQXDH, browser hybrid KEM, PGP limitations, VPN guidance,
  and Monero note
- add new appendix C1: stylometric analysis and writing style covering features
  measured, deployed tools, real cases (J.K. Rowling), effective and ineffective
  countermeasures including AI rewriting
- fix Dangerzone GitHub URL (firstlook -> freedomofpress)
- Remove duplicate footnote [^500]; minor wording fixes ("users" -> "people",
  passive voice tweaks, cross-reference updates)

- docs/index.md: both MSK and RSK GPG fingerprints in a collapsible tip admonition
  instead of bare text
- docs/about/index.md: convert Note admonitions to tip; reformat social media
  links into collapsible tip block
- docs/mirrors/index.md: simplify PDF download instructions to point to Releases;
- README.md: add star history chart
- mkdocs.yml: rename site to "The Hitchhiker's Guide"; update site description
  with hashtags

- sign.yml: remove commented-out workflow_run trigger and if: condition; add
  verify job that runs after sign, downloads artifacts, runs verify_pdf.py, and
  writes a full job summary with hashes; update artifact upload description; minor
  comment and whitespace cleanup
- release.yml, changelog.yml: replace decorative banner comments with single-line
  comments; fix trailing-space style in permissions block
- publish.yml: remove stale comment about nomaterial theme
- verify_pdf.py: full rewrite: replace single-hash-file lookup with flexible
  resolver that checks both bare hash files (.sha256, .b2sum) and two-column
  sumfiles (sha256sums.txt, b2sums.txt); add BLAKE2b verification alongside
  SHA-256; fix signature extension (.asc not .sig); improve CLI (--file,
  --export-dir flags; remove --all; default runs all checks); improve VirusTotal
  output with direct link; cleaner output formatting with ruled separators

README.md

@@ -1,5 +1,9 @@
 Welcome.
 
+## Star History
+
+[![Star History Chart](https://api.star-history.com/chart?repos=Anon-Planet/thgtoa&type=date&logscale&legend=top-left)](https://www.star-history.com/?repos=Anon-Planet%2Fthgtoa&type=date&logscale=&legend=bottom-right)
+
 This is a guide with the aim of providing an introduction to various online tracking techniques, online ID verification techniques, and detailed guidance to creating and maintaining (truly) anonymous online identities. <span style="color: red">**It is written with hope for activists, journalists, scientists, lawyers, whistle-blowers, and good people being oppressed, censored, harassed anywhere!**</span> This guide has no affiliation with the [Anonymous](https://en.wikipedia.org/wiki/Anonymous_(hacker_group)) <sup>[[Wikiless]](https://wikiless.com/wiki/Anonymous_(hacker_group))</sup> <sup>[[Archive.org]](https://web.archive.org/web/https://en.wikipedia.org/wiki/Anonymous_(hacker_group))</sup> collective/movement.
 
 This guide is an open-source non-profit initiative, [licensed](LICENSE.html) under **Creative Commons Attribution-NonCommercial 4.0 International** ([cc-by-nc-4.0](https://creativecommons.org/licenses/by-nc/4.0/) <sup>[[Archive.org]](https://web.archive.org/web/https://creativecommons.org/licenses/by-nc/4.0/)</sup>) and is **not sponsored/endorsed by any commercial/governmental entity**. This means that you are free to use our guide for pretty much any purpose **excluding commercially** as long as you do attribute it. There are no ads or any affiliate links.