fix(agent-tunnel): clone ca_manager Arc to unbreak master build

[irvingouj@Devolutions (irvingoujAtDevolution)]

Summary

Master is currently broken on Linux + Windows (tests, lints jobs).

crates/agent-tunnel/src/listener.rs:152-163 moves the same Arc<CaManager> into both AgentTunnelHandle and AgentTunnelListener, which doesn't compile:

error[E0382]: use of moved value: `ca_manager`
   --> crates/agent-tunnel/src/listener.rs:162:13

The fix is a one-liner: Arc::clone(&ca_manager) for the handle so the move into Self still type-checks.

Root cause

PR #1773 added the ca_manager field to AgentTunnelListener. PR #1775 used ca_manager in the same bind() body for the handle initializer. Each PR's CI was green against its own base, but the merge of #1775 on top of #1773 produced a semantic conflict that wasn't textually conflicting, so GitHub merged it without re-running CI.

Test plan

• cargo check -p agent-tunnel — clean
• cargo clippy -p agent-tunnel --tests -- -D warnings — clean
• Linux + Windows CI green

[github-actions]

Let maintainers know that an action is required on their side

• Add the label release-required Please cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module) when you request a maintainer to cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module)

• Add the label release-blocker Follow-up is required before cutting a new release if a follow-up is required before cutting a new release

• Add the label publish-required Please publish libraries (`Devolutions.Gateway.Utils`, OpenAPI clients, etc) when you request a maintainer to publish libraries (Devolutions.Gateway.Utils, OpenAPI clients, etc.)

• Add the label publish-blocker Follow-up is required before publishing libraries if a follow-up is required before publishing libraries

[irvingouj@Devolutions (irvingoujAtDevolution)]

Superseded by 6e80f71 on master (feat(dgw): route KDC traffic through agent tunnel), which carries the same Arc::clone fix. Closing as duplicate.