feat(265): Create markdown file test-etv56m.md with prose content

specs/265-markdown-file-creation-d89d68/feature.yaml

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+feature:
+  id: "265-markdown-file-creation-d89d68"
+  name: "markdown-file-creation-d89d68"
+  number: 265
+  branch: "feat/265-markdown-file-creation-d89d68"
+  lifecycle: "research"
+  createdAt: "2026-03-29T09:29:09Z"
+status:
+  phase: "implementation-complete"
+  progress:
+    completed: 7
+    total: 7
+    percentage: 100
+  currentTask: null
+  lastUpdated: "2026-03-29T09:45:56.221Z"
+  lastUpdatedBy: "feature-agent:implement"
+  completedPhases:
+    - "analyze"
+    - "requirements"
+    - "research"
+    - "plan"
+    - "phase-1"
+    - "phase-2"
+    - "phase-3"
+validation:
+  lastRun: null
+  gatesPassed: []
+  autoFixesApplied: []
+tasks:
+  current: null
+  blocked: []
+  failed: []
+checkpoints:
+  - phase: "feature-created"
+    completedAt: "2026-03-29T09:29:09Z"
+    completedBy: "feature-agent"
+errors:
+  current: null
+  history: []

specs/265-markdown-file-creation-d89d68/spec.yaml

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+name: "markdown-file-creation-d89d68"
+number: 265
+branch: "feat/265-markdown-file-creation-d89d68"
+oneLiner: "Create a markdown file named test-etv56m.md with a title and 2-3 sentences about any topic"
+userQuery: |
+  create a single markdown file called test-etv56m.md with a title and 2-3 sentences about anything
+summary: >
+  Create a single markdown file named test-etv56m.md in the repository root with a markdown heading
+  as title and 2-3 sentences of prose content, following the established pattern of 90+ test files
+  in the Sheep project. The implementation will use file I/O to create the markdown file, stage it
+  in git, commit with a conventional commit message, and push to the feature branch.
+phase: "Requirements"
+sizeEstimate: "S"
+
+relatedFeatures:
+  - number: 264
+    name: "markdown-file-creation"
+    relationship: "Identical pattern — create markdown file with title and 2-3 sentences"
+  - number: 263
+    name: "markdown-file-creation"
+    relationship: "Identical pattern — create markdown file with title and 2-3 sentences"
+  - number: 262
+    name: "markdown-file-creation"
+    relationship: "Identical pattern — create markdown file with title and 2-3 sentences"
+
+technologies:
+  - "Markdown (file format)"
+  - "Git (version control and commits)"
+  - "Python 3.11+ (runtime)"
+  - "Python pathlib (file I/O)"
+
+relatedLinks: []
+
+openQuestions: []
+
+content: |
+  ## Problem Statement
+
+  The Sheep automated implementation platform requires the ability to create simple test markdown files
+  following an established pattern. This feature creates a single test markdown file (`test-etv56m.md`)
+  at the repository root with a title and prose content, demonstrating automated file creation,
+  git integration, and conventional commit workflows.
+
+  The feature serves as a minimal, testable unit of work for the automated implementation system,
+  with 90+ similar test files already existing in the repository as precedents (test-*.md files
+  at the root directory). This is a continuation of the markdown-file-creation pattern established
+  in features 069-264, with identical requirements and implementation approach.
+
+  ## Success Criteria
+
+  - [ ] File `test-etv56m.md` is created in the repository root directory
+  - [ ] File contains a valid markdown heading (# syntax) as the title
+  - [ ] File contains exactly 2-3 sentences of prose content below the heading
+  - [ ] File is encoded in UTF-8 with no BOM
+  - [ ] File uses LF (Unix-style) line endings
+  - [ ] File size is approximately 400-600 bytes (natural outcome of proper structure)
+  - [ ] File is staged to git with `git add test-etv56m.md`
+  - [ ] File is committed with message format: `feat(265): create markdown file test-etv56m.md with prose content`
+  - [ ] Commit is pushed to feature branch `feat/265-markdown-file-creation-d89d68`
+  - [ ] Markdown syntax is valid per CommonMark specification
+  - [ ] No other files are modified or created
+  - [ ] Implementation matches the established pattern from features 069-264
+
+  ## Functional Requirements
+
+  - **FR-1**: Create a file named `test-etv56m.md` in the repository root using Python pathlib
+  - **FR-2**: File must contain a markdown heading as title using `#` syntax (level 1 heading)
+  - **FR-3**: File must contain exactly 2-3 sentences of prose content below the heading, separated by a blank line
+  - **FR-4**: Prose content may be about any topic (nature, technology, science, history, culture, philosophy, etc.)
+  - **FR-5**: Stage the created file using `git add test-etv56m.md`
+  - **FR-6**: Commit the file with a conventional commit message: `feat(265): create markdown file test-etv56m.md with prose content`
+  - **FR-7**: Push the commit to the feature branch `feat/265-markdown-file-creation-d89d68`
+  - **FR-8**: Implementation must not modify, delete, or overwrite any existing files
+  - **FR-9**: Implementation must not modify source code, tests, or configuration files
+
+  ## Non-Functional Requirements
+
+  - **NFR-1**: File encoding must be UTF-8 without BOM (Byte Order Mark)
+  - **NFR-2**: Line endings must be LF (Unix-style, `\n`), not CRLF (`\r\n`)
+  - **NFR-3**: File size should be approximately 400-600 bytes as a natural outcome of proper structure
+  - **NFR-4**: Markdown syntax must be valid per CommonMark specification
+  - **NFR-5**: Implementation must follow the established pattern from 90+ existing test files (test-*.md)
+  - **NFR-6**: Implementation must use straightforward, imperative Python code (create content string, write to file)
+  - **NFR-7**: Implementation should execute in approximately 10-15 minutes
+  - **NFR-8**: Git operations (add, commit, push) must follow the pattern from features 069-264
+  - **NFR-9**: No external dependencies beyond Python standard library (pathlib) and git
+
+  ## Product Questions & AI Recommendations
+
+  All key parameters are defined by the established pattern from 90+ identical test files and features 069-264:
+
+  | # | Question | AI Recommendation | Rationale |
+  | - | -------- | ----------------- | --------- |
+  | — | File name, location, format, encoding, line endings, git workflow | Established by pattern (see Functional & Non-Functional Requirements above) | 90+ precedent files and 195+ successful implementations of identical features establish clear, unambiguous requirements. No product decisions needed. |
+
+  **Note**: This feature is fully specified by precedent. The pattern is proven and consistent across all prior markdown-file-creation features. Implementation follows the established approach with no architectural decisions or trade-offs needed.
+
+  ## Codebase Analysis
+
+  ### Project Structure
+
+  The Sheep repository consists of:
+  - **Repository root**: Contains 90+ test markdown files (test-*.md) following a consistent pattern
+  - **src/sheep/**: Application source code (agents, config, flows, tools, observability)
+  - **specs/**: Feature specification directory with subdirectories for each feature number (e.g., specs/265-markdown-file-creation-d89d68/)
+  - **tests/**: Test suite for the application
+  - **pyproject.toml**: Python project configuration (dependencies, build, tools)
+  - **.github/**: GitHub workflows and configuration
+  - **README.md**: Project documentation for the CrewAI-based automation platform
+  - **Dockerfile**: Container configuration for the Sheep platform
+
+  The test markdown files at the repository root are artifacts of the markdown-file-creation feature
+  pattern and do not form part of the application source code. They serve as validation artifacts
+  for the automated implementation system.
+
+  ### Architecture Patterns
+
+  **Established File Creation Pattern** (90+ precedents):
+  - Simple file creation using Python pathlib for I/O operations
+  - Each markdown file follows: `# Heading\n\n<2-3 sentences of prose>`
+  - UTF-8 encoding (no BOM), LF line endings
+  - File size typically 400-600 bytes (as natural outcome of proper structure)
+  - Implementation follows straightforward imperative code (create content string, write to file)
+  - Files are isolated test artifacts with no dependencies on application source code
+  - Diverse topics (nature, technology, science, history, culture, philosophy, etc.) observed across existing test files
+
+  **Git Workflow Pattern**:
+  - Feature branch already created as `feat/265-markdown-file-creation-d89d68`
+  - Create/modify files in working directory
+  - Stage with `git add test-etv56m.md`
+  - Commit with conventional commit format: `feat(265): create markdown file test-etv56m.md with prose content`
+  - Push to feature branch
+  - No modifications to source code or configuration files
+  - Branch naming convention: `feat/<number>-<feature-name>-<suffix>`
+
+  **Feature Implementation Pattern** (observed in features 069-264):
+  - Minimal, isolated changes affecting only repository root
+  - No dependencies on application source code (/src/sheep/)
+  - No test modifications, no configuration changes
+  - Single-file operations with straightforward I/O
+  - Each feature is identical in structure and requirements
+  - Implementation is identical across all prior iterations
+
+  ### Relevant Technologies
+
+  - **Python 3.11+**: Project requires Python 3.11 or higher (from pyproject.toml)
+  - **pathlib (Python standard library)**: Used for file I/O operations (example: Path(\"test-etv56m.md\").write_text())
+  - **Git**: Version control; file staging, commits, and branch operations
+  - **Markdown syntax**: Simple format with heading (#) and prose content per CommonMark specification
+  - **CrewAI**: Framework used by Sheep platform for agent-based automation (not directly relevant to this file creation task)
+
+  ## Affected Areas
+
+  | Area | Impact | Reasoning |
+  | ---- | ------ | --------- |
+  | Repository Root Directory | Low | Adds one new markdown file (test-etv56m.md) to existing collection of 90+ test files; no modifications to existing files or directory structure |
+  | File System | Low | Single file creation operation (~400-600 bytes); no directory structure changes, no deletions or overwrites |
+  | Git Repository | Low | Standard single commit and push following established pattern from features 069-264; no branch/merge complexity, no destructive operations |
+  | Source Code | None | Feature is purely file creation; does not depend on or impact any source code in /src/sheep/ or elsewhere |
+  | Specs Directory | Low | Updates only this spec.yaml file as part of requirements phase; no impact on other specs or configurations |
+  | Application Logic | None | Feature has no impact on application behavior, agents, flows, or tools |
+
+  ## Dependencies
+
+  - **Git repository**: Feature branch `feat/265-markdown-file-creation-d89d68` must exist (pre-created)
+  - **File system**: Write access to repository root directory (already available)
+  - **Established pattern**: 90+ test files provide clear precedent for content format and structure
+  - **Git configuration**: Standard git configuration (user.name, user.email) must be set up for commits
+  - **Python pathlib**: Available in Python 3.11+ standard library (no external dependencies)
+  - **File naming**: Filename test-etv56m.md is provided in the feature spec and must be used exactly as specified
+
+  ## Size Estimate
+
+  **S** (Small — approximately 10-15 minutes) — This is a minimal-effort, single-file creation feature:
+
+  - **File creation**: ~5 minutes (write one markdown heading + 2-3 sentences of prose with appropriate topic)
+  - **Validation**: ~3 minutes (verify markdown syntax, UTF-8 encoding, LF line endings, structure correctness)
+  - **Git workflow**: ~2-5 minutes (stage file, commit with conventional message, push to branch)
+  - **Total estimate**: 10-15 minutes of actual work
+
+  **Justification**:
+  - Well-established pattern with 90+ identical test files providing clear precedent
+  - Flexible topic selection with no research or architectural decisions needed
+  - Single file with minimal, well-understood content format (one heading + prose)
+  - No testing, documentation, or configuration changes required
+  - Recent feature implementations (260-264) demonstrate efficient implementation of identical features in 10-15 minutes
+  - File naming (test-etv56m.md) is pre-specified, eliminating any naming decisions
+  - Git workflow is mechanical and follows exact precedent from 40+ prior implementations