TAN-1023: Migrate all repos to Optional<T> for nullablity

[naanci]

Description of changes

• return Optional from nullable repository
• replace annotated nullable model fields with Optional values
• removed @NullColumn and @NotNullColumn

Checklist before review

• I have done a thorough self-review of the PR
• Copilot has reviewed my latest changes, and all comments have been fixed and/or closed.
• If I have made database changes, I have made sure I followed all the db repo rules listed in the wiki here. (check if no db changes)
• All tests have passed
• I have successfully deployed this PR to staging
• I have done manual QA in both dev (and staging if possible) and attached screenshots below.

Screenshots

Dev

Staging

[pat-agent]

Available PR Commands

• /migrate - Applies this PR's database migrations to the staging DB (can only be run by someone on @Patina-Network/codebloom)
• /copy - Triggers copy from production to staging db (can only be run by tahminator or angelayu0530)

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot-arm/tags under the following tags:

• codebloom-standup-bot-arm:staging-latest
• codebloom-standup-bot-arm:staging-2026.10.09-20.10.36
• codebloom-standup-bot-arm:staging-c39bc0d

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot/tags under the following tags:

• codebloom-standup-bot:staging-latest
• codebloom-standup-bot:staging-2026.10.09-20.10.33
• codebloom-standup-bot:staging-c39bc0d

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-arm/tags under the following tags:

• codebloom-arm:staging-latest
• codebloom-arm:staging-2026.10.09-20.13.47
• codebloom-arm:staging-c39bc0d

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom/tags under the following tags:

• codebloom:staging-latest
• codebloom:staging-2026.10.09-20.13.27
• codebloom:staging-c39bc0d

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot-arm/tags under the following tags:

• codebloom-standup-bot-arm:staging-latest
• codebloom-standup-bot-arm:staging-2026.10.10-22.25.14
• codebloom-standup-bot-arm:staging-f65d116

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot/tags under the following tags:

• codebloom-standup-bot:staging-latest
• codebloom-standup-bot:staging-2026.10.10-22.25.07
• codebloom-standup-bot:staging-f65d116

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-arm/tags under the following tags:

• codebloom-arm:staging-latest
• codebloom-arm:staging-2026.10.10-22.28.49
• codebloom-arm:staging-f65d116

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom/tags under the following tags:

• codebloom:staging-latest
• codebloom:staging-2026.10.10-22.29.00
• codebloom:staging-f65d116

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot/tags under the following tags:

• codebloom-standup-bot:staging-latest
• codebloom-standup-bot:staging-2026.10.10-22.40.38
• codebloom-standup-bot:staging-51d8053

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot-arm/tags under the following tags:

• codebloom-standup-bot-arm:staging-latest
• codebloom-standup-bot-arm:staging-2026.10.10-22.40.44
• codebloom-standup-bot-arm:staging-51d8053

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-arm/tags under the following tags:

• codebloom-arm:staging-latest
• codebloom-arm:staging-2026.10.10-22.42.15
• codebloom-arm:staging-51d8053

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom/tags under the following tags:

• codebloom:staging-latest
• codebloom:staging-2026.10.10-22.42.33
• codebloom:staging-51d8053

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot-arm/tags under the following tags:

• codebloom-standup-bot-arm:staging-latest
• codebloom-standup-bot-arm:staging-2026.10.10-23.10.20
• codebloom-standup-bot-arm:staging-97f6a48

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot/tags under the following tags:

• codebloom-standup-bot:staging-latest
• codebloom-standup-bot:staging-2026.10.10-23.10.09
• codebloom-standup-bot:staging-97f6a48

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-arm/tags under the following tags:

• codebloom-arm:staging-latest
• codebloom-arm:staging-2026.10.10-23.13.46
• codebloom-arm:staging-97f6a48

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom/tags under the following tags:

• codebloom:staging-latest
• codebloom:staging-2026.10.10-23.13.32
• codebloom:staging-97f6a48

[sonarqubecloud]

Quality Gate passed for 'codebloom_frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot/tags under the following tags:

• codebloom-standup-bot:staging-latest
• codebloom-standup-bot:staging-2026.10.10-23.39.30
• codebloom-standup-bot:staging-e635518

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-arm/tags under the following tags:

• codebloom-arm:staging-latest
• codebloom-arm:staging-2026.10.10-23.40.54
• codebloom-arm:staging-e635518

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom-standup-bot-arm/tags under the following tags:

• codebloom-standup-bot-arm:staging-latest
• codebloom-standup-bot-arm:staging-2026.10.10-23.39.12
• codebloom-standup-bot-arm:staging-e635518

[sonarqubecloud]

Quality Gate passed for 'codebloom_backend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
84.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[pat-agent]

The image has been uploaded to https://hub.docker.com/r/patinanetwork/codebloom/tags under the following tags:

• codebloom:staging-latest
• codebloom:staging-2026.10.10-23.41.27
• codebloom:staging-e635518