docs(grpc): title-case headings, replace ASCII diagrams with PNGs, archive older version URLs

[rgsl888prabhu]

Summary

• Normalize all gRPC documentation section titles to proper title case (quick-start, advanced, api, examples, index, grpc-server-architecture)
• Replace ASCII art diagrams in grpc-server-architecture.md with PNG images (grpc-process-model.png, grpc-job-states.png)
• Increase gRPC toctree maxdepth from 2 to 4 in index.rst for better sidebar navigation
• Update versions1.json: older release version URLs moved from docs.nvidia.com to archive.docs.nvidia.com

Test plan

• Verify rendered docs show correct title casing in all gRPC sections
• Confirm PNG diagrams render correctly in grpc-server-architecture page
• Check sidebar TOC depth shows nested gRPC pages as expected
• Validate older version links in the version switcher resolve to archive URLs

🤖 Generated with Claude Code

[rgsl888prabhu]

Closing in favor of #1420 which uses a proper branch off main.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

This PR updates NVIDIA cuOpt documentation to communicate the MIP solver's beta status, GPU-accelerated primal heuristics, and ongoing optimality work, while standardizing gRPC documentation formatting. Additionally, it simplifies dependency version specifiers across conda environments, central manifests, and Python build configs by removing redundant lower-bound qualifiers.

Changes

MIP Solver Beta Documentation Updates

Layer / File(s)	Summary
README and core MIP solver documentation README.md, docs/cuopt/source/cuopt-c/mip/index.rst, docs/cuopt/source/cuopt-cli/index.rst, docs/cuopt/source/cuopt-python/mip/index.rst, docs/cuopt/source/introduction.rst, docs/cuopt/source/milp-features.rst, docs/cuopt/source/mip-settings.rst	Updated README opening description to highlight MIP beta status, supported problem classes, agent-first workflows, and GPU-accelerated primal heuristics. Added consistent beta-status notes across API documentation (C, CLI, Python) and feature pages describing current focus on feasible solution finding and ongoing optimality proof development.
gRPC documentation title-case and structure updates cpp/docs/grpc-server-architecture.md, docs/cuopt/source/cuopt-grpc/advanced.rst, docs/cuopt/source/cuopt-grpc/api.rst, docs/cuopt/source/cuopt-grpc/examples.rst, docs/cuopt/source/cuopt-grpc/grpc-server-architecture.md, docs/cuopt/source/cuopt-grpc/index.rst, docs/cuopt/source/cuopt-grpc/quick-start.rst	Standardized section heading capitalization to title case across gRPC documentation. Replaced ASCII process-model and job-state diagrams with image references in server architecture documentation.
FAQ entry and documentation version URLs docs/cuopt/source/faq.rst, docs/cuopt/source/index.rst, docs/cuopt/source/versions1.json	Added new FAQ entry describing MIP solver usage across supported APIs and beta status. Updated documentation table-of-contents maxdepth and standardized gRPC section formatting. Redirected archived documentation version URLs from docs.nvidia.com to archive.docs.nvidia.com.

Dependency Version Qualifier Cleanup

Layer / File(s)	Summary
Conda environment dependency simplification conda/environments/all_cuda-129_arch-aarch64.yaml, conda/environments/all_cuda-129_arch-x86_64.yaml, conda/environments/all_cuda-132_arch-aarch64.yaml, conda/environments/all_cuda-132_arch-x86_64.yaml	Removed redundant >=0.0.0a0 lower-bound qualifiers from cudf, libraft-headers, librmm, pylibraft, rapids-logger, and rmm package pins across four CUDA/architecture variant environment files.
Central dependencies.yaml manifest updates dependencies.yaml	Simplified package version specifiers across conda and requirement/pyproject matrices by removing >=0.0.0a0 qualifiers from cuOpt, cuOpt-server, cuOpt-sh-client, libcuopt, and RAPIDS package constraints.
Python pyproject.toml dependency specifications python/cuopt/pyproject.toml, python/cuopt_self_hosted/pyproject.toml, python/cuopt_server/pyproject.toml, python/libcuopt/pyproject.toml	Removed >=0.0.0a0 lower-bound qualifiers from package constraints in project dependencies, optional dependencies, and build backend requires lists.

---

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

---

Possibly related PRs

• NVIDIA/cuopt#596: Updates dependency version pins in the same pyproject.toml and conda environment files affected by this PR's qualifier removal changes.
• NVIDIA/cuopt#788: Modifies dependencies.yaml and pyproject.toml package version specifiers, intersecting with this PR's dependency pin simplification.

---

Suggested labels

doc, non-breaking

---

Suggested reviewers

• gforsyth
• tmckayus
• kaatish

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly and concisely summarizes the primary changes: title-casing gRPC headings, replacing ASCII diagrams with PNGs, and archiving older version URLs.
Description check	✅ Passed	The description is well-related to the changeset, providing clear context for each category of change (title casing, diagram replacement, toctree depth, version URL updates) and includes a test plan.
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 release/26.06

⚔️ Resolve merge conflicts

• Resolve merge conflict in branch release/26.06

---

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