Document secret storage in DATABASE.md and DEVELOPING.md. Update
SPEC-implementation with company_secrets schema and indexes. Add
migrate-inline-env-secrets script for converting existing plain
env values to managed secrets (dry-run by default, --apply to commit).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Switch from PGlite (WebAssembly) to embedded-postgres for zero-config
local development — provides a real PostgreSQL server with full
compatibility. Add startup banner with config summary on server boot.
Improve server bootstrap with auto port detection, database creation,
and migration on startup. Update DATABASE.md, DEVELOPING.md, and
SPEC-implementation.md to reflect the change. Update CLI database
check and prompts. Simplify OnboardingWizard database options.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
