stacklok / toolhive / 17787195909

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feat(operator): Add MCPServer restart annotation support (#1882)

* feat(operator): add restart annotation support with rolling and immediate strategies

- Implement restart trigger via mcpserver.toolhive.stacklok.dev/restarted-at annotation (RFC3339 timestamp)
- Support optional mcpserver.toolhive.stacklok.dev/restart-strategy annotation (rolling or immediate)
- Rolling strategy updates deployment for zero-downtime restart (default)
- Immediate strategy deletes pods for fast restart
- Track last processed restart in status.lastRestartRequest to prevent duplicate restarts
- Update docs and examples to reflect new annotation format and usage

Signed-off-by: Ola Adebayo <34113844+olamide226@users.noreply.github.com>

* feat(operator): add comprehensive tests for restart annotation reconciliation

Add first test suite for MCPServer restart annotation logic in the operator controller.
Covers rolling and immediate restart strategies, including edge cases (invalid timestamp, already processed, missing resources, unknown strategy).

Signed-off-by: Ola Adebayo <34113844+olamide226@users.noreply.github.com>

* feat(operator): Add MCPServer restart annotation support

Add restart functionality via annotations without CRD schema changes:
- Support mcpserver.toolhive.stacklok.dev/restarted-at annotation (RFC3339 timestamp)
- Support mcpserver.toolhive.stacklok.dev/restart-strategy annotation (rolling/immediate)
- Rolling strategy triggers zero-downtime deployment update (default)
- Immediate strategy deletes pods for fast restart
- Track last processed restart in annotations to prevent duplicates
- Update documentation and examples for new annotation usage

Resolves operator restart requirements while maintaining backward compatibility.

Signed-off-by: Ola Adebayo <34113844+olamide226@users.noreply.github.com>

* test(operator): Enhance MCPServer restart annotation tests with error handling

Signed-off-by: Ola Adebayo <olamideadebayo2001@gmail.com>

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