refactor: organize protocol monitors into protocols/ folder

[spalen0]

What

After merging automation/, the repo root had accumulated ~26 protocol monitor directories alongside shared code and infra, making it hard to navigate. This moves every protocol monitor into a single protocols/ folder.

Root now holds only shared code (utils/, automation/, common-abi/) and infra (deploy/, docs/, scripts/, tests/).

Changes

• Moved all protocol dirs (aave, morpho, safe, yearn, lrt-pegs, 3jane, …) under protocols/ via git mv so file history is preserved.
• Paths: load_abi() / open() calls now reference protocols/<name>/abi/…. common-abi/ stays at the root as shared ABIs (unchanged).
• Imports: intra/cross-protocol imports (compound, maple, morpho, safe) and utils/address_resolver now use the protocols.* package path.
• automation/jobs.yaml: task script: paths re-pointed under protocols/ (utils/tenderly/tenderly.py unchanged).
• pyproject.toml: switched [tool.setuptools] to namespace package discovery (packages.find), so the editable-install finder maps protocols.* automatically — adding a new protocol no longer requires a packages edit.
• Tests: updated imports and mock.patch() target strings.
• Docs: README protocol links, CLAUDE.md, and CONTRIBUTING.md updated for the new layout.

Verification

• ✅ uv run pytest tests/ — 457 passed, 4 skipped
• ✅ uv run ruff check . — all checks passed
• ✅ uv run ruff format --check . — all files formatted
• ✅ python -m automation render-crontab renders; every jobs.yaml script path resolves on disk
• ✅ python protocols/aave/main.py and python protocols/compound/main.py (a protocols.*-importing script) run and resolve imports

⚠️ Deploy note — requires re-sync on the box

This is a packaging change, not just code. Several scripts now import the protocols.* package (e.g. protocols/safe/main.py, which runs every 10 min in the multisig profile), and protocols only resolves through the editable-install import finder. That finder is generated at install time from pyproject.toml, so the box must regenerate it before the new code runs:

git pull
uv sync --frozen --extra ai      # regenerates the protocols.* import finder
sudo systemctl restart monitoring

If the multisig profile's automatic git pull lands this code before a manual uv sync, scripts with protocols.* imports will fail with ModuleNotFoundError: protocols until the sync runs. The cron cadence itself is unchanged (the crontab only references profiles, not script paths), so no crontab edit is needed beyond what the restart re-renders. This matches the existing jobs.yaml note: pyproject/dependency changes need a manual uv sync + restart.

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