feat: add marf compress node config

[federico-stacks]

Description

This PR introduces a node configuration option to explicitly enable the MARF compression feature:

[node]
...
marf_compress = true    # default: true

NOTE: This PR is built on top of #6654, so would be easy to review once the base PR is merged first. However, if the two PRs need to be reviewed in different order, this one can be reviewed commit-by-commit starting from feat: add NodeConfig.marf_compress (2b90dd3) and continuing through the end of the branch (up to 7eeeb3f).

Applicable issues

• fixes [MARF] Investigate sparse trie representations #6593

Additional info (benefits, drawbacks, caveats)

With this PR, MARF options defined in the node configuration are propagated to the following databases:

• Clarity VM: via MarfedKV::open(..) (already supported)
• Chainstate: via StacksChainState::open_index(..) (updated to accept MARF options)
• Sortition DB: via SortitionDB::open_index(..) (updated to accept MARF options)

Some refactoring was required to ensure MARF options are correctly passed through to the Chainstate and Sortition databases. These changes do not affect core logic. The most notable adjustments are:

• In ChainsCoordinator::run(), burnchain databases are now retrieved directly from the Burnchain instance rather than opened inline, allowing MARF options to be inherited consistently.
• In NakamotoBlockProposal::validate_replay(), StacksChainState is now accepted as a handle for reopening connections, making it easier to inherit MARF options.
• In Burchain struct, serialization traits were removed (as they do not appear to be used in practice), avoiding the need to apply them to MARFOpenOpts.

Checklist

• Test coverage for new or modified code paths
• Changelog is updated
• Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo

[codecov]

Codecov Report

❌ Patch coverage is 86.02620% with 32 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.48%. Comparing base (b61a766) to head (f8815ff).
⚠️ Report is 28 commits behind head on develop.

Files with missing lines	Patch %	Lines
stacks-node/src/main.rs	0.00%	15 Missing ⚠️
stacks-node/src/nakamoto_node/miner.rs	66.66%	5 Missing ⚠️
stacks-node/src/neon_node.rs	90.00%	3 Missing ⚠️
stackslib/src/chainstate/burn/db/sortdb.rs	92.10%	3 Missing ⚠️
.../chainstate/burn/operations/leader_block_commit.rs	60.00%	2 Missing ⚠️
stackslib/src/chainstate/stacks/db/mod.rs	90.47%	2 Missing ⚠️
stackslib/src/burnchains/burnchain.rs	94.11%	1 Missing ⚠️
stackslib/src/chainstate/burn/sortition.rs	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #6811       +/-   ##
============================================
+ Coverage    59.40%   81.48%   +22.07%     
============================================
  Files          412      412               
  Lines       218187   218682      +495     
  Branches       338      338               
============================================
+ Hits        129610   178185    +48575     
+ Misses       88577    40497    -48080     

Files with missing lines	Coverage Δ
stacks-node/src/burnchains/mocknet_controller.rs	69.12% <100.00%> (+0.14%)	⬆️
stacks-node/src/nakamoto_node/peer.rs	97.05% <100.00%> (-0.46%)	⬇️
stacks-node/src/nakamoto_node/relayer.rs	83.97% <100.00%> (+8.02%)	⬆️
stacks-node/src/node.rs	87.31% <100.00%> (+0.15%)	⬆️
stacks-node/src/run_loop/boot_nakamoto.rs	80.66% <100.00%> (+3.42%)	⬆️
stacks-node/src/tenure.rs	100.00% <100.00%> (ø)
stackslib/src/burnchains/mod.rs	82.59% <ø> (+2.59%)	⬆️
.../chainstate/burn/operations/leader_key_register.rs	98.58% <100.00%> (+77.73%)	⬆️
stackslib/src/chainstate/coordinator/mod.rs	81.80% <100.00%> (+2.86%)	⬆️
stackslib/src/chainstate/stacks/index/marf.rs	84.53% <ø> (+5.20%)	⬆️
... and 12 more

... and 294 files with indirect coverage changes

---

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[francesco-stacks]

LGTM, just a couple of sanity checks and nits. Just resolve the comments them if everything looks correct!

[francesco-stacks]

LGTM!

[jcnelson]

I just had one question about the default for MARF compression. Otherwise LGTM.

[cylewitruk-stacks]

LGTM

[cylewitruk-stacks]

✅

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.