Docs redesign — week 4 IA cutover (renames + redirects)

[kiryl-xyz]

Stacked on #629 → #628. The big one — restructures the EN "Documentation" anchor into the PRD's 8 top-level groups, consolidates the streaming taxonomy, and ships 21 redirects.

What ships

New nav (was 11 groups, now 8 + Resources)

	Group	Count
1	Get Started	5 (adds /quickstart back into nav)
2	Read chain state	11 (RPC + indexed reads + DAS + Enhanced Tx + Wallet API)
3	Stream chain data	5 (LaserStream, WebSockets, Webhooks, streaming/{overview,quickstart})
4	Send transactions	8
5	Run dedicated infrastructure	4
6	Specialized	3 (Compression, Staking, Orb)
7	Billing	2
8	Resources	3 (glossary, sdks, changelog)

Streaming consolidation

• WebSockets unified — `enhanced-websockets/` + `rpc/websocket/` → `websockets/`. Two tiers (Enhanced + Standard) on a single endpoint, documented as one product. New `websockets/overview.mdx` covers both.
• LaserStream absorbs Yellowstone gRPC — five `grpc/*` monitoring guides moved under `laserstream/guides/`. New `laserstream/migration-from-yellowstone.mdx` for existing Yellowstone users (one URL change).

Files: 10 moves (history preserved), 11 deletes, 2 new

data-streaming/quickstart    → streaming/quickstart
grpc/{5 monitoring guides}   → laserstream/guides/*
enhanced-websockets/{4}      → websockets/*
rpc/websocket/quickstart     → websockets/quickstart

deleted: data-streaming, getting-data, enhanced-websockets,
         rpc/websocket, grpc, grpc/quickstart, event-listening (×2),
         laserstream/websocket, rpc/http/get-accounts,
         rpc/http/get-transactions, rpc/websocket/stream-pump-amm-data

new:     websockets/overview.mdx
         laserstream/migration-from-yellowstone.mdx

Redirects: 21 entries (19 new + 2 pre-existing)

`/grpc` and `/grpc/quickstart` land on `/laserstream/grpc` (the product page); the migration guide is a sibling. All sub-paths redirect directly. `errors.404.redirect: false` stays — unmatched paths still 404 visibly.

Internal-link rewrites: 70 occurrences across 33 files

Old paths (`/data-streaming`, `/grpc`, `/enhanced-websockets`, `/rpc/websocket`, `/getting-data`, `/event-listening`) all repointed.

Bug caught by pre-commit review

The rewriter regex used a lookahead but no lookbehind, so `/grpc` matched inside `/laserstream/grpc` and produced doubled paths like `/laserstream/laserstream/migration-from-yellowstone` in 9 places. Pre-commit review caught it before merge. Fixed all 9 + documented the lesson in SPIKE-NOTES.md for future bulk rewrites.

Validation

• `docs.json` is valid JSON.
• `mint validate` parses every new and moved file cleanly. The 2 pre-existing parse errors (`api-reference/das/searchassets`, `api-reference/enhanced-transactions/gettransactions`) are unrelated — they were failing on main before this branch.
• `mint broken-links` found no new broken links.
• `npm run audit:check` passes. 361 EN pages (was 368), 333 in nav, 28 orphans (was 34).

Notes for review

• ZH side of `docs.json` nav is intentionally stale. The i18n CI workflow regenerates it on merge to main via `npm run i18n:nav-apply`. Don't try to hand-fix.
• Committed with `--no-verify` per the redesign-branch workflow.
• `scripts/_ia-cutover.js` stays in tree as a record of the restructure. Not registered in package.json.

Validation steps after merge to preview

```bash

Spot-check a handful of redirects

for url in /data-streaming /grpc /enhanced-websockets /rpc/websocket /getting-data; do
curl -sIL "$url" | grep -E "HTTP|Location"
done
```

🤖 Generated with Claude Code