CLI install: tilde (~) path not expanded correctly for HarperDB destination

[kriszyp]

When the CLI install prompt asks "Please enter a destination for HarperDB:", entering a ~/... path is handled inconsistently:

• Sometimes creates a literal ~ directory relative to cwd.
• Sometimes tries to resolve it as an absolute home path but fails.
• Only a leading / path reliably works.

Reproduction

Please enter a destination for HarperDB: ~/dev/hdb
# → installs successfully but then:
Error: ENOENT: no such file or directory, open '/Users/ethan/dev/hdb/harperdb-config.yaml'

The directory was installed to the correct location but ~/dev/hdb was not expanded consistently everywhere it was used — some code paths got the unexpanded string.

Fix

Resolve all user-supplied paths through path.resolve() / os.homedir() expansion immediately after input, before storing or using them anywhere.

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🤖 Filed by Claude on behalf of Kris.