docs: add contributor docs, community infrastructure, and roadmap rewrite

- Add root CONTRIBUTING.md with incentives (paper acknowledgment, Mac Mini
  giveaway), contribution tiers, PR process, and maintainership path
- Add CODE_OF_CONDUCT.md (Contributor Covenant v2.1)
- Add .pre-commit-config.yaml with ruff lint + format hooks
- Add GitHub issue templates (bug report, feature request, new eval dataset)
- Add PR template with test/lint/format checklist
- Rewrite docs roadmap with GitHub Projects structure, current focus areas,
  and collapsible version history
- Remove Development section from MkDocs nav; replace with top-level Roadmap tab
- Delete changelog, extending docs (consolidated into CONTRIBUTING.md)
- Delete root ROADMAP.md (content now lives in docs site)
- Add pre-commit to dev extras in pyproject.toml
- Add Roadmap link to README

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,95 @@
+name: Bug Report
+description: Report a bug or unexpected behavior
+labels: ["type:bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for reporting a bug! Please fill out the information below to help us investigate.
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A clear description of what the bug is.
+    validations:
+      required: true
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: Steps to reproduce the behavior.
+      placeholder: |
+        1. Run `jarvis ask "..."`
+        2. See error...
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: What you expected to happen.
+    validations:
+      required: true
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual Behavior
+      description: What actually happened.
+    validations:
+      required: true
+  - type: dropdown
+    id: os
+    attributes:
+      label: Operating System
+      options:
+        - Linux
+        - macOS
+        - Windows
+    validations:
+      required: true
+  - type: dropdown
+    id: python
+    attributes:
+      label: Python Version
+      options:
+        - "3.10"
+        - "3.11"
+        - "3.12"
+        - "3.13"
+    validations:
+      required: true
+  - type: dropdown
+    id: hardware
+    attributes:
+      label: Hardware
+      options:
+        - NVIDIA GPU
+        - AMD GPU
+        - Apple Silicon
+        - CPU only
+    validations:
+      required: true
+  - type: dropdown
+    id: engine
+    attributes:
+      label: Engine
+      description: Which inference engine are you using?
+      options:
+        - Ollama
+        - vLLM
+        - llama.cpp
+        - SGLang
+        - MLX
+        - Cloud (OpenAI/Anthropic/Google)
+        - LiteLLM
+        - Other
+    validations:
+      required: false
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs / Traceback
+      description: Paste any relevant logs or traceback here.
+      render: shell
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Ask a Question
+    url: https://github.com/open-jarvis/OpenJarvis/discussions
+    about: Use Discussions for questions and help

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,47 @@
+name: Feature Request
+description: Propose a new feature or enhancement
+labels: ["type:feature"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        For non-trivial changes, please open this issue for discussion before starting a PR. This saves everyone time by catching design issues early.
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem Statement
+      description: What problem does this solve? Why is this needed?
+    validations:
+      required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Describe how you'd like this to work.
+    validations:
+      required: true
+  - type: dropdown
+    id: area
+    attributes:
+      label: Primitive Area
+      description: Which part of OpenJarvis does this touch?
+      options:
+        - Intelligence
+        - Engine
+        - Agent
+        - Tools
+        - Learning
+        - Evals
+        - Frontend
+        - Channels
+        - Rust
+        - Other
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Any alternative solutions or features you've considered.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/new_eval.yml

@@ -0,0 +1,63 @@
+name: New Eval Dataset
+description: Propose a new evaluation dataset or benchmark
+labels: ["type:eval"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Adding eval datasets is one of the easiest ways to contribute! Fill out the details below.
+  - type: input
+    id: name
+    attributes:
+      label: Dataset Name
+      placeholder: e.g., HumanEval, GSM8K
+    validations:
+      required: true
+  - type: input
+    id: url
+    attributes:
+      label: URL / Reference
+      description: Link to the dataset or paper.
+      placeholder: https://...
+    validations:
+      required: true
+  - type: checkboxes
+    id: capability
+    attributes:
+      label: What capability does it test?
+      options:
+        - label: Reasoning
+        - label: Math
+        - label: Code
+        - label: Knowledge
+        - label: Multimodal
+        - label: Tool Use
+        - label: Long Context
+        - label: Other
+  - type: input
+    id: size
+    attributes:
+      label: Approximate Size
+      description: Number of examples in the dataset.
+      placeholder: e.g., 500
+    validations:
+      required: false
+  - type: dropdown
+    id: scorer
+    attributes:
+      label: Proposed Scorer Type
+      options:
+        - Exact Match
+        - F1
+        - BLEU
+        - LLM-as-Judge
+        - Custom
+    validations:
+      required: false
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context
+      description: Any other details about this dataset.
+    validations:
+      required: false

.github/pull_request_template.md

@@ -0,0 +1,16 @@
+## What does this PR do?
+
+<!-- Brief description of the change and its motivation -->
+
+## How was this tested?
+
+<!-- Describe tests added or manual testing performed -->
+
+## Checklist
+
+- [ ] Tests pass (`uv run pytest tests/ -v`)
+- [ ] Linter passes (`uv run ruff check src/ tests/`)
+- [ ] Formatter passes (`uv run ruff format --check src/ tests/`)
+- [ ] New/changed public API has docstrings
+- [ ] Follows registry pattern (if adding new component)
+- [ ] Documentation updated (if applicable)