chore: add CODEOWNERS file

[dianab-cl]

Adds .github/CODEOWNERS to assign @cosmos/stack-team as code owners for all files.

[greptile-apps]

Greptile Summary

This PR updates .github/CODEOWNERS to replace the previous global owner @cosmos/sdk-core-dev with @cosmos/stack-team and removes the documentation comment. The change is straightforward, but the correctness of the CODEOWNERS rule depends entirely on @cosmos/stack-team existing as a valid team in the cosmos GitHub organization — if it does not, GitHub silently discards the rule and no automatic review requests will be generated.

Confidence Score: 4/5

Safe to merge once @cosmos/stack-team is confirmed to exist in the cosmos GitHub org.

The only meaningful risk is that the replacement team may not exist, causing GitHub to silently ignore the CODEOWNERS rule. This is a present, verifiable condition rather than a speculative concern, warranting a 4 instead of 5.

.github/CODEOWNERS — confirm @cosmos/stack-team is a valid org team before merging.

Vulnerabilities

No security concerns identified. Assigning a GitHub team as CODEOWNERS reduces risk by enforcing required reviews; the only concern is whether the named team actually exists (see inline comment).

Important Files Changed

Filename	Overview
.github/CODEOWNERS	Replaces @cosmos/sdk-core-dev with @cosmos/stack-team as global code owner; removes documentation comment. Risk: if the new team doesn't exist in the org, code ownership enforcement silently breaks.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[PR Opened] --> B{CODEOWNERS rule active?}
    B -- "@cosmos/stack-team exists in org" --> C[GitHub auto-requests review from stack-team]
    B -- "Team does not exist" --> D[GitHub silently skips rule]
    C --> E[Review required before merge]
    D --> F[No required reviewers — PR can merge unreviewed]

Loading

_{Reviews (1): Last reviewed commit: "Apply suggestion from @dianab-cl" | Re-trigger Greptile}