docs: Add deprecation notice pointing to network-agent

[facundofarias]

Summary

• Adds a deprecation notice to README.md, CLAUDE.md, and deploy-agent.gemspec pointing users to network-agent
• Both agents remain functional during the transition period — this PR can be merged once we're confident network-agent is working properly

Test plan

• Verify notice renders correctly on GitHub and RubyGems

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation

  • Added repository-level deprecation and archive notices directing users to migrate to the network-agent repository, with guidance that it has fewer dependencies and is easier to install.

• Chores

  • Updated package metadata and descriptions to reflect deprecation and point users toward the network-agent repository.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 0d5d3a03-ae3e-460e-a7dd-1af8d8e4c8ca

📥 Commits

Reviewing files that changed from the base of the PR and between 265f502 and 7e9c7b4.

📒 Files selected for processing (1)

• deploy-agent.gemspec

✅ Files skipped from review due to trivial changes (1)

• deploy-agent.gemspec

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Walkthrough

Repository archival and deprecation notices added to documentation and gemspec, directing users to the successor repository deployhq/network-agent.

Changes

Cohort / File(s)	Summary
Deprecation & Archive Notices CLAUDE.md, README.md, deploy-agent.gemspec	Inserted repository archive/deprecation messages in README and CLAUDE.md and prefixed the gemspec description with a deprecation notice pointing to https://github.com/deployhq/network-agent. No code or public API changes.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: adding deprecation notices across multiple files pointing users to the network-agent repository.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/deprecation-notice

📝 Coding Plan

• Generate coding plan for human review comments

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@deploy-agent.gemspec`:
- Line 10: The s.description string in deploy-agent.gemspec is too long for
RuboCop's Layout/LineLength; update the s.description assignment to split the
long literal into multiple shorter string literals (e.g., break the sentence
into two adjacent string literals or use a backslash continuation) so the source
line length is under the limit while preserving the same combined description
text; edit the s.description assignment to use concatenated/adjacent literals
referencing the same wording.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 76b73794-97fe-45d8-b412-b6e6d1c36af0

📥 Commits

Reviewing files that changed from the base of the PR and between 2430cc6 and 265f502.

📒 Files selected for processing (3)

• CLAUDE.md
• README.md
• deploy-agent.gemspec