F4KRP-47 Create Routes and Route Stops Table

[eddywang4340]

Notion ticket link

F4KRP-47

Implementation description

• Created routes table (with fields: route_id, name, notes, length, route_stops)
• Created route stops table (with fields: route_id, location_id, stop_number, route)
• Created a relationship between two tables. For example, given a route you can easily access all of its stops. Also, given a stop, you can easily access which route it belongs to.
• If you delete a route, it will delete all of the route_stops that belong to that route (not sure if we want this)

Steps to test

What should reviewers focus on?

Checklist

• My PR name is descriptive and in imperative tense
• My commit messages are descriptive and in imperative tense. My commits are atomic and trivial commits are squashed or fixup'd into non-trivial commits
• I have run the appropriate linter(s)
• I have requested a review from the PL, as well as other devs who have background knowledge on this PR or who will be building on top of this PR

[Copilot]

Pull Request Overview

This PR implements database models for a route management system by creating Route and RouteStop tables with their respective SQLModel classes. The implementation establishes a one-to-many relationship between routes and route stops with cascade deletion behavior.

• Created Route model with fields for route metadata (name, notes, length) and relationship to route stops
• Created RouteStop model with foreign key references and stop sequencing capability
• Added proper model registration in the database initialization module

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
backend/python/app/models/routes.py	Defines Route model with base, table, and API models including relationship to route stops
backend/python/app/models/route_stops.py	Defines RouteStop model with foreign key relationships and stop sequencing
backend/python/app/models/init.py	Registers new models for database initialization

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[ColinToft]

LGTM!