[agent] chore: add github actions

[guillaumejparis]

Proposed changes

Testing Instructions

1. Step-by-step how to test
2. Environment or config notes

Related issues

• Closes #ISSUE-NUMBER

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug

Further comments

[Copilot]

Pull request overview

Adds a new GitHub Actions CI pipeline for the agent (multi-OS/multi-arch build, lint, audit, tests, and optional artifact publishing), and includes small Rust error-handling/logging cleanups to avoid unwrap_err() patterns.

Changes:

• Introduce .github/workflows/agent-ci.yml to build/test/lint/audit across Linux/Windows/macOS (x86_64 + arm64) and publish artifacts to JFrog on push.
• Refactor a few Result handling blocks to use match / if let Err(...) patterns and improve logged error formatting.
• Add a targeted Clippy allow for too_many_arguments on the keep-alive ping function.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/process/keep_alive.rs	Avoids unwrap_err() in the keep-alive register loop; adds Clippy allow for argument count.
src/process/agent_job.rs	Simplifies job polling Result handling via match.
src/api/register_agent.rs	Logs registration HTTP errors without redundant to_string() in the log call.
src/api/manage_jobs.rs	Logs list/clean job HTTP errors without redundant to_string() in the log call.
.github/workflows/agent-ci.yml	New CI workflow for formatting, clippy, audit, testing, building, installer creation, and JFrog publishing.

Comments suppressed due to low confidence (1)

.github/workflows/agent-ci.yml:177

• Same issue as the cargo-audit step: on Windows the installed binary is typically cargo-cache.exe, so checking $HOME/.cargo/bin/cargo-cache (no .exe) can cause needless reinstalls. Make the existence check OS-aware (include .exe on Windows) or use an idempotent install approach to avoid paying the compile/install cost every run.

      - name: Install cargo cache
        run: |
          if [ -x "$HOME/.cargo/bin/cargo-cache" ] || [ -x "$USERPROFILE\.cargo\bin\cargo-cache.exe" ]; then
            echo "cargo-cache already installed."
          else
            cargo install cargo-cache --locked
          fi
        shell: bash

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