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: false

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 73.51431% with 722 lines in your changes missing coverage. Please review.
✅ Project coverage is 64.34%. Comparing base (9e6280e) to head (229fb88).
⚠️ Report is 69 commits behind head on develop.

Files with missing lines	Patch %	Lines
...lib/src/chainstate/stacks/index/test/marf_perfs.rs	0.00%	153 Missing ⚠️
stackslib/src/chainstate/stacks/index/node.rs	83.59%	103 Missing ⚠️
...lib/src/chainstate/stacks/index/test/node_patch.rs	65.40%	82 Missing ⚠️
stackslib/src/chainstate/stacks/index/bits.rs	66.94%	79 Missing ⚠️
stackslib/src/chainstate/stacks/index/storage.rs	74.50%	77 Missing ⚠️
stackslib/src/chainstate/stacks/index/test/marf.rs	53.33%	70 Missing ⚠️
stacks-node/src/tests/marf/marf_compress_on.rs	5.45%	52 Missing ⚠️
stacks-node/src/main.rs	0.00%	15 Missing ⚠️
contrib/stacks-inspect/src/main.rs	0.00%	13 Missing ⚠️
stackslib/src/chainstate/stacks/index/test/trie.rs	95.73%	11 Missing ⚠️
... and 21 more

❌ Your project check has failed because the head coverage (64.34%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

❗ There is a different number of reports uploaded between BASE (9e6280e) and HEAD (229fb88). Click for more details.

HEAD has 23 uploads less than BASE

Flag	BASE (9e6280e)	HEAD (229fb88)
	96	73

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #6811       +/-   ##
============================================
- Coverage    79.61%   64.34%   -15.27%     
============================================
  Files          589      598        +9     
  Lines       357111   358670     +1559     
============================================
- Hits        284300   230803    -53497     
- Misses       72811   127867    +55056     

Files with missing lines	Coverage Δ
stacks-common/src/util/macros.rs	85.41% <ø> (+0.34%)	⬆️
stacks-node/src/burnchains/mocknet_controller.rs	69.12% <100.00%> (+0.14%)	⬆️
stacks-node/src/nakamoto_node/peer.rs	97.05% <100.00%> (+0.04%)	⬆️
stacks-node/src/nakamoto_node/relayer.rs	78.18% <100.00%> (-5.48%)	⬇️
stacks-node/src/node.rs	87.17% <100.00%> (+0.15%)	⬆️
stacks-node/src/run_loop/boot_nakamoto.rs	78.00% <100.00%> (-2.00%)	⬇️
stacks-node/src/tenure.rs	100.00% <100.00%> (ø)
stacks-node/src/tests/mod.rs	67.35% <ø> (-5.10%)	⬇️
stacks-node/src/tests/nakamoto_integrations.rs	22.84% <100.00%> (-18.93%)	⬇️
stackslib/src/burnchains/mod.rs	82.59% <ø> (ø)
... and 46 more

... and 366 files with indirect coverage changes

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