docs: fix daily docs audit drift

[clockwork-labs-bot]

Summary

• Update the TypeScript client reference so TableHandle.count() returns bigint, matching crates/bindings-typescript/src/lib/table.ts and existing TypeScript SDK tests.
• Clarify spacetime publish environment behavior: ordinary publishes preserve unspecified stored values by default, and optional values are removed only through explicit unset or replacement.
• Fix the C# authentication guide's SpacetimeAuth connection reducer snippet so it is exported as [Reducer(ReducerKind.ClientConnected)] public static, matching the C# server module requirements.
• Document procedure HTTP response decompression: outbound procedure HTTP requests now automatically accept and decode gzip/Brotli responses, and module code should not manually decompress those bodies.
• Fix the TypeScript procedure transaction example so the b procedure argument is declared as t.string(), matching the myTable.b column inserted inside withTx.

Audit notes

• Required PR preflight found open bot/docs-audit PR docs: fix daily docs audit drift #5936, so this run updated the existing PR branch.
• Merged current origin/master into bot/docs-audit before adding audit fixes. On 2026-09-18, this brought in source PR Update railway deploy button to follow their requirements #5948, a localized Railway deploy-button docs update; no additional docs correction was needed for that change.
• Commit-impact pass: source PR Implement persistent typed database environments #5887 introduced persistent typed database environments. The docs fix aligns the publish concept page with the new CLI reference, environment variables guide, implementation, and smoketests.
• Commit-impact pass: source PR Add compression support to ctx.http.fetch #5698 enabled transparent gzip/Brotli decompression for procedure HTTP requests. The docs fix adds the user-visible behavior and the manual-decompression caveat to the procedure HTTP section.
• Commit-impact pass: source PR Auto-reconnect (server side only) #5877 added server-side support for SDK auto-reconnect. Existing public docs already keep the lower-level DbConnection reconnection contract unchanged, so no docs change was made for that PR.
• Compared current skill files in skills/*/SKILL.md against public docs for CLI flows, SDK APIs, server module APIs, auth, onboarding, deployment, MCP, Unity, Unreal, and cross-language casing consistency.
• The 2026-09-17 skills/docs consistency pass found one high-confidence drift in docs/docs/00200-core-concepts/00200-functions/00400-procedures.md: a TypeScript procedure example declared b as t.u32() while inserting it into a table column declared as t.string().
• The 2026-09-18 skills/docs consistency pass found no new high-confidence public-doc mismatch. Stale-looking TypeScript reducer syntax appeared only in archived version-1.12.0 docs and was left unchanged.

Validation

• pnpm build in docs/ passed on 2026-09-17. It emitted the existing Docusaurus update/Browserslist notices and the existing docusaurus-plugin-llms-txt warning for /docs/ask-ai/ask-ai, then generated static files successfully.
• pnpm --dir docs sync-agent-skills passed on 2026-09-18.
• pnpm --dir docs typecheck passed on 2026-09-18.

[clockwork-labs-bot]

Source for this localized docs update: #5698 enabled transparent gzip/Brotli decompression for procedure HTTP requests.