fix: use lowercase channelid in WebSocket response

[layertwo]

Summary

• Fix PairingChannel.create() hanging indefinitely by using lowercase channelid in the WebSocket response, matching the Mozilla channelserver protocol
• The fxa-pairing-channel library destructures { channelid: channelId } (lowercase key), but we were sending {"channelId": ...} (camelCase), resulting in undefined
• Add structured logging to all channel service operations

Test plan

• 975 Python tests pass (1 pre-existing unrelated flaky test)
• Deploy and verify /pair page creates channel and shows QR code

[github-actions]

Coverage report

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
lambda/src/services
channel_service.py
Project Total

This report was generated by python-coverage-comment-action

[github-actions]

Diff for stage: DefaultStage

Warning

3 Destructive Changes

Diff for stack: GitHubOidcStack - 0 to add, 1 to update, 0 to destroy 🟡

Details

Resources
[~] Custom::AWSCDKOpenIdConnectProvider GitHubOidcProvider7EBF861F
 ├─ [~] CodeHash
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 └─ [~] RejectUnauthorized
[~] AWS::Lambda::Function CustomAWSCDKOpenIdConnectProviderCustomResourceProviderHandlerF2C543E0
 ├─ [~] Code
 │   └─ [~] .S3Key:
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Diff for stack: Service-prod - 3 to add, 3 to update, 3 to destroy ❌

Details

[!WARNING]
Destructive Changes ‼️
Stack: Service-prod - Resource: AuthApiDeploymentB62B2E4627f0b326f37b837e2a54a9393870f6be - Impact: WILL_DESTROY

Stack: Service-prod - Resource: TokenApiDeploymentB896C2197f4fd8f40928d8ff6b65325e6f60c797 - Impact: WILL_DESTROY

Stack: Service-prod - Resource: ProfileApiDeployment84A54415afa95090416ea0bbd4b1d2aac5a9241c - Impact: WILL_DESTROY

Resources
[-] AWS::ApiGateway::Deployment AuthApiDeploymentB62B2E4627f0b326f37b837e2a54a9393870f6be destroy
[-] AWS::ApiGateway::Deployment TokenApiDeploymentB896C2197f4fd8f40928d8ff6b65325e6f60c797 destroy
[-] AWS::ApiGateway::Deployment ProfileApiDeployment84A54415afa95090416ea0bbd4b1d2aac5a9241c destroy
[+] AWS::ApiGateway::Deployment AuthApiDeploymentB62B2E46cd727903b39a54701810720fe0a5fca4
[+] AWS::ApiGateway::Deployment TokenApiDeploymentB896C219b16a73c2bacf13dff150a851137e236c
[+] AWS::ApiGateway::Deployment ProfileApiDeployment84A54415e0158c62574d24c31b8dbd21e82873c4
[~] AWS::Lambda::Function AuthApiHandlerED50ACFA
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[~] AWS::Lambda::Function TokenApiHandler2E66DB25
 ├─ [~] Code
 │   └─ [~] .S3Key:
 │       ├─ [-] 5174e8eb39d2a8923c1463ac8268cc0ba8191e0dbc87557af1d142a35d5b5988.zip
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[~] AWS::Lambda::Function ProfileApiHandler9B65A298
 ├─ [~] Code
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[~] AWS::Lambda::Function ApiHandler5E7490E8
 ├─ [~] Code
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 └─ [~] Metadata
     └─ [~] .aws:asset:path:
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[~] AWS::ApiGateway::Stage AuthApiDeploymentStageprodB0E4172A
 └─ [~] DeploymentId
     └─ [~] .Ref:
         ├─ [-] AuthApiDeploymentB62B2E4627f0b326f37b837e2a54a9393870f6be
         └─ [+] AuthApiDeploymentB62B2E46cd727903b39a54701810720fe0a5fca4
[~] AWS::ApiGateway::Stage TokenApiDeploymentStageprod11035AE4
 └─ [~] DeploymentId
     └─ [~] .Ref:
         ├─ [-] TokenApiDeploymentB896C2197f4fd8f40928d8ff6b65325e6f60c797
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[~] AWS::ApiGateway::Stage ProfileApiDeploymentStageprodF609D968
 └─ [~] DeploymentId
     └─ [~] .Ref:
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         └─ [+] ProfileApiDeployment84A54415e0158c62574d24c31b8dbd21e82873c4
[~] AWS::Lambda::Function ChannelApiHandler02759D57
 ├─ [~] Code
 │   └─ [~] .S3Key:
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 └─ [~] Metadata
     └─ [~] .aws:asset:path:
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         └─ [+] asset.1a72e657b8684e4911cda6c47b2b926974c2fc5bbb5642c69f660fd34ff5cdd8

No Changes for stack: Frontend-prod ✅
No Changes for stack: Monitoring-prod ✅

Generated for commit ff3b334 at 2026-03-03T04:01:23.718Z