Actualize counts, repair navigation, add four research articles

[AnastasiyaW]

What changed

Counts were stale in every hardcoded place, and the browse page had drifted far out of sync with docs/.

Stats

Source of truth is hooks/stats.py - the same counter the build feeds into stats.js.

	before	after
README / mkdocs.yml / AGENTS.md / welcome.md	847+	851+
docs/index.md server-rendered fallback	785	851
GitHub repo description	785+	851+
browse page header	771+	851+
cross-references	3987+ (counted index pages too)	3344+ (wiki-links inside articles only)

The docs/index.md fallback mattered: stats.js overwrites it in the browser, so anything that does not run JS - crawlers, LLM scrapers - was reading a number 66 articles behind.

Navigation

• 234 articles were linked from no domain index, and 438 were absent from the browse page. audio-voice, go, llm-memory and writing had no browse block at all.
• The Image Generation block claimed 27 articles, listed 11 as plain text (not links), and the domain actually holds 77.
• scripts/sync_indexes.py now appends every unlinked article to its domain MOC and to the browse page, recomputes per-domain counts, converts leftover plain-text entries into working links, and adds blocks for missing domains. Idempotent.
• lint.py orphans: 104 -> 0.

Ambiguous slugs

Seven slugs exist in more than one domain (error-handling in five, concurrency in three, and five others). hooks/wikilinks.py resolves [[slug]] through one global map and strips any domain prefix, so every reference landed on whichever file won the map - the Go index linked to the C++ article. 111 references are now relative Markdown links pinned to their own domain; 2 genuinely cross-domain ones stay as wiki-links.

[[ACE++]] never rendered at all - the resolver refuses any slug containing +, so three pages shipped a literal [[ACE++]] token to the live site. Now Markdown links.

New articles (4)

Article	Domain
WinHTTP Asynchronous Client	cpp
Three-State Check Aggregation	testing-qa
Negative Controls for Verification	testing-qa
Edge Softness and Compositing	image-generation

The WinHTTP article is verified against winhttp.h from Windows SDK 10.0.26100.0 plus first-party documentation; the flag-expansion table is quoted from the header, not from memory.

Also

• Language tags on the seven untagged code fences the build had been warning about.
• generate_llms_txt.py strips wiki-link syntax from descriptions - 18 entries were carrying raw [[slug]] tokens into the LLM-facing index.
• scripts/sync_stats.py propagates counts to all six hardcoded places; both stats rules now point at the scripts instead of a hand-edit checklist.
• History row added to architecture/happyin-knowledge-space.md.

Verification

[stats] 851 articles across 26 domains
[validate] 878 articles checked, all clean
[link-checker] 881 files checked, all links OK
[public_check] Public files clean - no internal details leaked
mkdocs build --strict: Documentation built in 145.41 seconds
lint.py: orphans 0, broken_links 0, stale 0, too_short 0, empty 0
lint.link-check.py --strict: All links OK
hooks/freshness_check.py --ci: 0 issues, llms.txt in sync (851 URLs)