docs: add llms.txt and llms-full.txt

[polarweasel]

Description

Adding LLM-guidance files to match what's in our other repos.

(No need for Kind test run, these just sit at the repo root and don't get built by anything.)

Validation

• Standard CI passes.
• Kind integration passes, or this PR explains why it was not run.

The kind integration test is manual due to taking ~30 min to complete. When the PR is ready for review,
run Actions -> Kind Integration -> Run workflow against the copy-pr-bot generated
pull-request/<PR_NUMBER> branch. Use the default test_path for the full suite,
or narrow it only while debugging.

Passing Kind Integration run:

Checklist

• I am familiar with the contributing guidelines in CONTRIBUTING.md.
• Commits are signed off for DCO compliance.
• New or existing tests cover these changes, or the PR explains why tests are not needed.
• Documentation is updated for user-facing behavior changes.
• Generated artifacts are updated when applicable, such as OpenAPI specs,
  docs screenshots, or Helm/rendered outputs.

Summary by CodeRabbit

• Documentation
  • Added comprehensive repository documentation (full and concise overviews) describing the project, system architecture, components, deployment/installer model, data/control paths, usage and development commands, documentation map, technology stack reference, and governance/release/security/license metadata for NVIDIA Config Manager.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 23567264-a129-4a80-b199-4177aaa2aa35

📥 Commits

Reviewing files that changed from the base of the PR and between fa210e7 and 1c77a3d.

📒 Files selected for processing (1)

• llms-full.txt

💤 Files with no reviewable changes (1)

• llms-full.txt

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📝 Walkthrough

Walkthrough

This pull request adds two documentation files to provide LLM-accessible project context. llms.txt is a quick project summary covering the Config Manager's components, key concepts, and technology stack. llms-full.txt is a comprehensive reference containing repository structure, architecture diagrams, deployment information, domain areas, documentation index, development commands, and governance metadata.

Changes

Project Documentation for LLM Context

Layer / File(s)

Summary

LLM context documentation llms.txt, llms-full.txt

Adds concise and comprehensive project overview files. llms.txt summarizes components, concepts, documentation links, and tech stack (Python/uv, FastAPI, Temporal, Nautobot, NATS/JetStream, PostgreSQL, Helm/Kubernetes, React/Next.js, Fern). llms-full.txt provides detailed repository layout, service architecture with event/data flows, installer and deployment model, core domain areas, development/testing commands, related projects, and governance/license metadata.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 Two scrolls of wisdom, side by side,
One quick, one deep—a helpful guide!
For robots reading code and dreams,
The Config Manager's context gleams.
Documentation hops along with glee! 📚✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and concisely summarizes the main change: adding two LLM-guidance documentation files (llms.txt and llms-full.txt) to the repository root.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ 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 ab/llms-txt

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_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@llms-full.txt`:
- Around line 150-157: Update the External Related Projects list to use correct
public repository names or mark private/missing repos: replace
`nautobot-broker-nats` with the known public slug `NVIDIA/nautobot-broker-nats`,
verify whether `nv-config-manager-templates` is misnamed (search orgs or repos
for similar slugs and update the entry to the correct repo name or remove/label
it as private), and do the same for `nautobot-plugin-nv-config-manager` (find
the correct slug/org or mark it as private/non-public); ensure each bullet uses
the exact repo slug or includes a note that the repository is
private/unavailable.

🪄 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: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 6cbc71dc-e99c-4fbb-b5a7-a3621ac60d37

📥 Commits

Reviewing files that changed from the base of the PR and between 1e7cfc2 and fa210e7.

📒 Files selected for processing (2)

• llms-full.txt
• llms.txt