Core: Implement Session Management with Concurrent Session Control

[Calebux]

Implement comprehensive session management including concurrent session limits, activity monitoring, and remote session termination. Closes #254

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[Smartdevs17]

⚠️ Merge conflicts detected

Hi @Calebux,

This PR has merge conflicts that must be resolved before it can be merged.

To fix:

1. Sync with the latest main branch: git fetch origin && git merge origin/main
2. Resolve the conflicts in your code
3. Push the resolved changes

Once resolved, the PR will be automatically merged on the next run.

---

🤖 Drips Wave Review Agent

[Smartdevs17]

⚠️ Merge conflicts detected

Hi @Calebux,

This PR has merge conflicts that must be resolved before it can be merged.

To fix:

1. Sync with the latest main branch: git fetch origin && git merge origin/main
2. Resolve the conflicts in your code
3. Push the resolved changes

Once resolved, the PR will be automatically merged on the next run.

---

🤖 Drips Wave Review Agent

[Smartdevs17]

⚠️ Merge conflicts detected

Hi @Calebux,

This PR has merge conflicts that must be resolved before it can be merged.

To fix:

1. Sync with the latest main branch: git fetch origin && git merge origin/main
2. Resolve the conflicts in your code
3. Push the resolved changes

Once resolved, the PR will be automatically merged on the next run.

---

🤖 Drips Wave Review Agent

[Calebux]

Resolved