Feature: configurable metadata databases with a path to remote SQL storage

[ila]

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Feature: configurable metadata databases with a path to remote SQL storage

Reviewed head: c39ef86; base: 2c94d92
Independent review and configured validation passed.

Performance comparisons: not applicable to this non-performance task.

Required runtime checks incomplete: timeout is non-blocking, not a pass.

• sf10-validation: passed; limit 30000s; evidence: https://github.com/mdrakiburrahman/ivm-bench/actions/runs/38698776561; https://api.github.com/repos/mdrakiburrahman/ivm-bench/actions/artifacts/11955714113/zip; sha256:7b9f22fcbc430d36ce903cf61ca28ed9d5fb4ba5fcffd6da7ceb374547d76ab3; pinned models 49 in each of three batches; archive /Users/ila/Code/agent-mistress/.runtime/gci-artifacts/run-38698776561-yy6rxlvz/results.zip
• rewriter: timeout — incomplete, not passed; limit 120s; evidence: /Users/ila/Code/agent-mistress/.runtime/runs/d7f5fa7aa0f5-ffy9hxa6/result.json;

Two independent fresh reviewer sessions passed this exact revision.
Validation scope: Pinned submodules; fresh GEN=ninja make; make test; make format-check
Validation command: ["/Users/ila/Code/agent-mistress/.venv/bin/python", "/Users/ila/Code/agent-mistress/scripts/general_validation.py", "2c94d92477e4966f16f6bbc84c98562e5e80ddb7"]

References #84

Companion PRs (also required for complete issue resolution):
#102
Do not close the issue until all companion PRs are merged.