chore: remove mev-searcher-pipeline-reference submodule; MEV intel lives in MEV_Bot

- Canonical framing: MEV_Bot/docs/framing + GUI Intel tab
- MASTER_INDEX points to MEV_Bot; bump MEV_Bot submodule to 722e378
- Standalone mev-searcher-pipeline-reference Gitea repo deprecated (redirect README)

Made-with: Cursor

.gitmodules

@@ -67,6 +67,3 @@
 [submodule "thirdweb-core-2103-test/lib/contracts"]
 	path = thirdweb-core-2103-test/lib/contracts
 	url = https://github.com/thirdweb-dev/contracts
-[submodule "mev-searcher-pipeline-reference"]
-	path = mev-searcher-pipeline-reference
-	url = https://gitea.d-bis.org/d-bis/mev-searcher-pipeline-reference.git

docs/MASTER_INDEX.md

@@ -16,7 +16,7 @@
 | **Agent / IDE instructions** | [AGENTS.md](../AGENTS.md) (repo root) |
 | **Local green-path tests** | Root `pnpm test` → [`scripts/verify/run-repo-green-test-path.sh`](../scripts/verify/run-repo-green-test-path.sh) |
 | **Git submodule hygiene + explorer remotes** | [00-meta/SUBMODULE_HYGIENE.md](00-meta/SUBMODULE_HYGIENE.md) — detached HEAD, push order, Gitea/GitHub, `submodules-clean.sh` |
-| **MEV searcher pipeline (taxonomy + diagrams, submodule)** | [../mev-searcher-pipeline-reference/README.md](../mev-searcher-pipeline-reference/README.md) — Gitea `d-bis/mev-searcher-pipeline-reference`; complements [MEV_Bot/specs/README.md](../MEV_Bot/specs/README.md) |
+| **MEV intel (taxonomy, MVP matrix, diagrams + GUI Intel tab)** | [../MEV_Bot/docs/framing/README.md](../MEV_Bot/docs/framing/README.md) — canonical framing in `MEV_Bot`; specs in [MEV_Bot/specs/README.md](../MEV_Bot/specs/README.md); standalone `mev-searcher-pipeline-reference` repo deprecated |
 | **What to do next** | [00-meta/NEXT_STEPS_INDEX.md](00-meta/NEXT_STEPS_INDEX.md) — ordered actions, by audience, execution plan |
 | **Live verification evidence (dated)** | [00-meta/LIVE_VERIFICATION_LOG_2026-03-30.md](00-meta/LIVE_VERIFICATION_LOG_2026-03-30.md) |
 | **Your personal checklist** | [00-meta/NEXT_STEPS_FOR_YOU.md](00-meta/NEXT_STEPS_FOR_YOU.md) |