add missing support for proxy mode in proxy runner

[yrobla]

It is covered as part of the runconfig but it was not supported as flag on the proxyrunner itself, while it was supported in run command

Related-to: #1638

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 42.07%. Comparing base (7e74099) to head (964649b).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1813      +/-   ##
==========================================
+ Coverage   42.03%   42.07%   +0.03%     
==========================================
  Files         184      184              
  Lines       21649    21662      +13     
==========================================
+ Hits         9101     9115      +14     
+ Misses      11860    11859       -1     
  Partials      688      688              

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[coveralls]

coverage: 39.567% (-0.07%) from 39.637%
when pulling e098e8a on issue-1638-add-proxymode
into 5907c4a on main.

[Copilot]

Pull Request Overview

Adds missing support for proxy mode flag in the proxy runner command, enabling users to specify proxy mode directly via command line arguments. This feature was already supported in the run config but not exposed as a command-line flag in the proxy runner itself.

• Adds --proxy-mode flag to the proxy runner command with default value "sse"
• Updates operator to handle proxy mode from MCPServer spec with backward compatibility
• Adds comprehensive tests to verify proxy mode flag functionality and validation

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
cmd/thv-proxyrunner/app/run.go	Adds proxy-mode flag definition, validation, and usage in runner configuration
cmd/thv-proxyrunner/app/run_test.go	Adds comprehensive tests for proxy mode flag parsing, validation, and integration
cmd/thv-operator/api/v1alpha1/mcpserver_types.go	Adds ProxyMode field to MCPServerSpec with validation constraints
cmd/thv-operator/controllers/mcpserver_runconfig.go	Implements proxy mode handling in operator with default fallback
test/e2e/chainsaw/operator/single-tenancy/test-scenarios/configmap-mode/mcpserver.yaml	Adds test configuration using streamable-http proxy mode
test/e2e/chainsaw/operator/single-tenancy/test-scenarios/configmap-mode/chainsaw-test.yaml	Adds verification tests for proxy mode functionality in logs and ConfigMap

Comments suppressed due to low confidence (1)

cmd/thv-proxyrunner/app/run_test.go:1

• The test case sets expectValid to false for invalid proxy mode, but the test doesn't actually validate the proxy mode value - it only tests flag parsing. The validation logic happens in runCmdFunc, not during flag parsing.

package app

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