docs: Add OSCAR initialization lifecycle documentation

[tyronechrisharris]

This PR adds a comprehensive Markdown document oscar_initialization_lifecycle.md detailing the step-by-step initialization and restart lifecycle of the current working OSCAR hybrid system.

The document specifically answers four main questions to aid in migrating to a fully containerized Docker Compose stack:

1. Startup Timing and Service Delays: Details the wait-state logic (pg_isready polling) used to delay the backend until PostGIS is fully initialized.
2. Certificate Authority & TLS Generation: Documents how LocalCAUtility generates the Root CA and leaf certificates on backend startup, stores them in osh-keystore.p12, and exports the public Root CA.
3. Database Provisioning & Authentication: Explains the .db_password generation via shell script and how scram-sha-256 is enforced in the PostGIS Dockerfile using POSTGRES_INITDB_ARGS.
4. Setup Wizard & State Persistence: Outlines the specific conditions that flag the system as "Uninitialized" on boot, and how the admin password hash and TOTP secrets are persisted to user_permissions.json using Gson serialization.

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PR created automatically by Jules for task 8430774786053900235 started by @tyronechrisharris

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🔄 Auto-Distributed via Sync

Original Flat Repo PR: tyronechrisharris/oscar-flat#97

🔗 Related Updates in this Sync:

• docs: Add OSCAR initialization lifecycle documentation earocorn/osh-core#14
• docs: Add OSCAR initialization lifecycle documentation #189
• docs: Add OSCAR initialization lifecycle documentation Botts-Innovative-Research/oscar-viewer#277
• docs: Add OSCAR initialization lifecycle documentation Botts-Innovative-Research/osh-oakridge-modules#172
• Update OSCAR submodule pointers for: docs: Add OSCAR initialization lifecycle documentation Botts-Innovative-Research/osh-oakridge-buildnode#136