…nce types

Applies §7.1 (Tradenames), §7.3 (Style), §7.4 (Terminology) from the
erigon-documents check routine to `docs/site/docs/`. No content changes —
only writing-quality fixes.

Three rule categories:

- **Tradenames (§7.1)** — `docker`/`linux`/`ethereum`/`caplin`/etc. capitalized
  in prose where they were mid-sentence lowercase. Mid-identifier occurrences
  (e.g. `go-ethereum`, `linux/amd64`, `docker-compose`) are preserved.

- **Terminology (§7.4)** — two `execution client` → `execution layer client`
  on landing pages.

- **Style (§7.3)** —
  - 169 Title-Case headings → sentence-case. Proper nouns, acronyms, and
    mixed-case branding (Erigon, GitHub, NVIDIA, PeerDAS, TxPool, FCU,
    Shutter Network, Docker Compose, …) are preserved.
  - Untyped code fences ``` ``` ``` → ``` ```text ``` so Prism doesn't crash
    on auto-detection. Tighter language tags (bash/yaml/json) can land in
    follow-ups.

Verified via:
  - Docusaurus production build (`pnpm run build`) — passes,
    `onBrokenAnchors: 'throw'` clean.
  - Zabaniya layer-1 review on staged diff — approved.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Sentry is an Erigon module — it's a proper noun, not a generic term. The
prior sentence-case pass lowercased it and produced the awkward "multiple
sentries" plural. Rephrased to "one or more external Sentry instances"
to keep the brand and avoid the pluralization entirely.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Brings the auto-generated llms-full.txt back in sync with the current
docs state after the heading-case revert. Picks up the tradename and
terminology fixes that survive in the current PR scope.

Generated by: python3 docs/site/scripts/generate-llms.py

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Erigon v3 has a single staged-sync pipeline — there is no user-facing
"sync mode" choice. The user-facing decision is `--prune.mode` with
values archive/full/minimal. The previous "Sync Modes" page title was
a v1-era hold-over; the page body already used "prune mode" terminology
throughout, so this commit aligns the title, URL, and all references
across the site.

Changes:
- Renamed docs/site/docs/fundamentals/sync-modes.md → prune-modes.md
  (frontmatter title and H1 updated)
- Updated all internal links (~16 occurrences) across docs/ and
  help-center/ (markdown links, JSX <Link> hrefs, inline prose)
- Regenerated llms.txt and llms-full.txt (both root + docs/site/static/)

Not changed:
- versioned_docs/version-v3.3/fundamentals/sync-modes.md — that is a
  frozen snapshot of the v3.3 release docs and reflects what was
  published at that time.
- Concept names that include the word "sync" but are distinct concepts
  (Staged Sync, OtterSync, Snapshot Sync) — preserved.

Build: `pnpm run build` passes with onBrokenLinks/onBrokenAnchors: 'throw'.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

## Summary

Two new pages in **Fundamentals**:

- **`/fundamentals/architecture`** — staged sync, modular processes,
storage split, embedded Caplin, flat-KV state. Mermaid component diagram
at the top.
- **`/fundamentals/database`** — datadir layout, MDBX engine properties,
immutable `.seg` snapshots, per-transaction history granularity, mainnet
sizing, tuning flags, safe-to-delete table.

## Stacked on #21451

Rebased on top of `docs/prose-audit-2026-05-27` so links can target the
renamed Prune Modes page. GitHub auto-retargets the base to
`release/3.4` once #21451 merges.

## Verification

- `npm run build` passes with `onBrokenLinks`/`onBrokenAnchors: 'throw'`
- `docs-site / build` (incl. llms verification) ✓ pass
- llms.txt and llms-full.txt regenerated

## Notes

- Sourced from the Improving-public-docs spec and the `README.md`
"Datadir structure" / "Erigon3 datadir size" / "Modularity" sections.
Once this lands, those README sections become safe to delete per the
spec.
- Adds `@docusaurus/theme-mermaid@^3.10.0` (used by the architecture
diagram).

---------

Co-authored-by: Bloxster <gianni.morselli@erigon.tech>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

…)"

This reverts commit f0b409c.