docs: comprehensive miner and signer configuration reference

[simone-stacks]

Description

• Add comprehensive reference TOML configs with all settings documented (defaults, units, interaction warnings)
• Add doc annotations (@default, @Units, @notes) to signer RawConfigFile struct
• Add docs/signing.md signer setup guide and update docs/mining.md with signer references

Applicable issues

• fixes Issue #96

Checklist

• Test coverage for new or modified code paths
• For new Clarity features or consensus changes, add property tests (see docs/property-testing.md)
• Changelog is updated
• Required documentation changes (e.g., rpc/openapi.yaml for RPC endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo

[francesco-stacks]

lgtm!

[francesco-stacks]

lgtm!

[simone-stacks]

I had to commit new changes since CI was complaining about the config files. Basically stackslib/conf is a symlink to sample/conf, and test_example_confs parses all .toml there as node ConfigFile. mainnet-signer-conf.toml is a stacks-signer binary config with fields like stacks_private_key that don't exist in the node ConfigFile, causing the test to fail.

Moving to a signer/ subdirectory fixes this since the test uses non-recursive read_dir.

[simone-stacks]

@jacinta-stacks @francesco-stacks do you think we should also have a test for the signer conf?

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.93%. Comparing base (d929c52) to head (0d0b61c).
⚠️ Report is 35 commits behind head on develop.

Files with missing lines	Patch %	Lines
stacks-signer/src/config.rs	87.50%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6936      +/-   ##
===========================================
+ Coverage    78.05%   84.93%   +6.87%     
===========================================
  Files          412      412              
  Lines       219938   219954      +16     
  Branches       338      338              
===========================================
+ Hits        171680   186814   +15134     
+ Misses       48258    33140   -15118     

Files with missing lines	Coverage Δ
stacks-signer/src/config.rs	91.28% <87.50%> (+6.09%)	⬆️

... and 206 files with indirect coverage changes

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[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.