chore: remove redundant init_db.sh script and documentation references

[Farhan-Abbas]

Fixes Issue #60

[Copilot]

Pull request overview

Removes the unused init_db.sh database initialization script and updates quick-start documentation to avoid instructing users to manually create a database that Docker/Postgres already provisions on first initialization (Fixes Issue #60).

Changes:

• Removed workbench/init_db.sh.
• Updated setup instructions in workbench/README.md, root README.md, and docs/getting-started.md to drop the redundant DB init step and renumber steps accordingly.
• Removed the obsolete initialization reference from CLAUDE.md.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
workbench/README.md	Updates “First Time Setup” to remove init_db.sh and focus on migrations/superuser creation.
workbench/init_db.sh	Deletes the redundant DB creation script.
README.md	Removes the DB init step from the top-level quick start and renumbers remaining steps.
docs/getting-started.md	Mirrors the quick-start update by removing the DB init step and renumbering.
CLAUDE.md	Removes the first-time init_db.sh instruction.

Comments suppressed due to low confidence (1)

README.md:90

• Since init_db.sh was removed, the docs no longer mention what to do if the PostgreSQL volume already exists but the starfish-router DB is missing (common after manual DB cleanup or reusing old volumes). Consider adding a brief troubleshooting note near this step explaining that DB creation only happens on first init, and users can either recreate the DB inside Postgres or remove the postgres_data volume and rerun make up.

3. **Run migrations and create superuser** (first time only)
   ```bash
   docker exec -it starfish-router poetry run python3 manage.py makemigrations
   docker exec -it starfish-router poetry run python3 manage.py migrate
   docker exec -it starfish-router poetry run python3 manage.py createsuperuser

</details>



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