265 lines
12 KiB
Markdown
265 lines
12 KiB
Markdown
---
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name: development-workflow
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description: "Development workflow methodology: planning, spiking, implementation plans, TDD, code editing patterns, pre-commit review, and subagent-driven execution."
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version: 2.0.0
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author: Hermes Agent
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license: MIT
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platforms: [linux, macos, windows]
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metadata:
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hermes:
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tags: [planning, TDD, code-review, implementation, workflow, development, spike, subagent]
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related_skills: [debugging, github]
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---
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# Development Workflow
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End-to-end development methodology: from idea to verified commit. Seven interlocking practices.
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## Section 1: Plan Mode
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When the user wants a plan instead of execution:
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- Do NOT implement code, edit project files, or run mutating commands
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- Deliverable: a markdown plan saved under `.hermes/plans/YYYY-MM-DD_HHMMSS-<slug>.md`
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- Include: goal, context, approach, step-by-step plan, files to change, tests/validation, risks
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See `references/plan-mode.md` for full details.
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## Section 2: Spikes (Throwaway Experiments)
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Validate feasibility before committing to a build. Spikes are disposable.
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### Core Loop
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```
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decompose → research → build → verdict
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```
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1. **Decompose** — Break idea into 2-5 independent feasibility questions (Given/When/Then)
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2. **Research** — Brief each spike, surface approaches, pick one
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3. **Build** — One directory per spike (`spikes/NNN-name/`), bias toward runnable output
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4. **Verdict** — VALIDATED / PARTIAL / INVALIDATED with evidence
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Key rules:
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- Order by risk (kill the idea fast if the hard part doesn't work)
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- Depth over speed — never declare "it works" after one happy-path run
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- Hardcode everything — it's a spike, not production
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See `references/spike.md` for full methodology including comparison spikes and frontier mode.
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## Section 3: Writing Implementation Plans
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Write plans assuming the implementer has zero codebase context. Bite-sized tasks. DRY. YAGNI. TDD.
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### Task Granularity
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Each task = 2-5 minutes of focused work. One action per step.
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### Plan Document Structure
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```markdown
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# [Feature Name] Implementation Plan
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> **For Hermes:** Use subagent-driven-development skill to execute this plan.
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**Goal:** [One sentence]
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**Architecture:** [2-3 sentences]
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**Tech Stack:** [Key technologies]
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### Task N: [Descriptive Name]
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**Objective:** [One sentence]
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**Files:** Create/Modify/Test paths
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**Step 1:** Write failing test [code]
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**Step 2:** Run test, verify FAIL
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**Step 3:** Write minimal implementation [code]
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**Step 4:** Run test, verify PASS
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**Step 5:** Commit
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```
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Key principles:
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- Exact file paths (not "the config file" but `src/config/settings.py`)
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- Complete code (copy-pasteable, not "add validation")
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- Exact commands with expected output
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- Verification steps that prove the task works
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See `references/writing-plans.md` for full plan-writing process and common mistakes.
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## Section 4: Test-Driven Development (TDD)
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### Iron Law
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```
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NO PRODUCTION CODE WITHOUT A FAILING TEST FIRST
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```
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### Red-Green-Refactor Cycle
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1. **RED** — Write one minimal failing test. Run it. Watch it fail.
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2. **GREEN** — Write simplest code to pass. Cheating is OK (hardcode, copy-paste).
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3. **REFACTOR** — Remove duplication, improve names. Keep tests green.
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Key rules:
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- One behavior per test; name describes behavior not implementation
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- Real code, not mocks (unless truly unavoidable)
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- If test passes immediately, you're testing existing behavior — fix the test
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- If 3+ TDD cycles fail to make progress, question the design
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See `references/test-driven-development.md` for the full TDD methodology, rationalizations table, and anti-patterns.
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## Section 5: Code Editing Patterns
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### Critical Pitfalls with Hermes patch Tool
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1. **Redaction of sensitive values** — `API_KEY = some_var` may get mangled to `API_KEY=***`. Use `data['key']` patterns or `write_file` instead.
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2. **Duplicate line insertion** — patch sometimes inserts `new_string` twice. Always read back to verify.
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3. **Non-unique old_string** — Always include 2-3 lines of context to make matches unique.
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4. **Stale file views** — Re-read the region before patching if the file was modified earlier.
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5. **NEVER use sed/regex bulk replace on Python code** — regex can't distinguish variable references from comments/strings/literals. Use line-range surgical replacements or Python `ast` module.
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### Python Unicode Docstring Pitfall
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Python 3.11+ **rejects** certain Unicode characters inside docstrings as a `SyntaxError`, even though they look like valid text. Common offenders:
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| Character | Name | Unicode | Error |
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|-----------|------|---------|-------|
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| `—` | Em dash | U+2014 | `SyntaxError: invalid character '—' (U+2014)` |
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| `→` | Right arrow | U+2192 | `SyntaxError: invalid character '→' (U+2192)` |
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| `–` | En dash | U+2013 | Same class of error |
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**Fix**: Replace with ASCII equivalents — `--` for em-dash, `->` for arrow, `-` for en-dash.
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**Prevention**: Run `python3 -m py_compile <file>` after any docstring edit (even if the file previously compiled — these chars can be pre-existing and only surface when `py_compile` runs explicitly).
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**Detection**: `grep -Pn '[\\x{2013}\\x{2014}\\x{2192}]' *.py` to find all instances before they cause failures.
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### Safe Patterns
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- Batch edits top-to-bottom (line numbers shift after each patch)
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- Verify after every non-trivial patch (read back + syntax check)
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- For large refactors: read entire file → make surgical replacements → write_file → py_compile
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See `references/code-editing.md` for full patterns and workarounds.
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## Section 6: Pre-Commit Code Review
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Automated verification pipeline before code lands. No agent should verify its own work.
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### Pipeline
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1. **Get the diff** — `git diff --cached` (or `git diff HEAD~1 HEAD`)
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2. **Static security scan** — grep for hardcoded secrets, shell injection, eval/exec, pickle, SQL injection
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3. **Baseline tests + linting** — capture failure count before changes (stash → run → pop)
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4. **Self-review pass** — NOT a checkbox scan. Systematic cross-file review:
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automated consistency scans, security gap hunting, dead code detection.
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See `references/self-review-pass.md` for the full methodology.
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Key rule: find issues BEFORE the user finds them — a shallow pass that
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misses bugs and requires the user to ask "你自己再审核一遍" is a failure.
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5. **Independent reviewer subagent** — dispatch via `delegate_task` with diff only
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6. **Evaluate** — all passed → commit; any failure → auto-fix loop (max 2 cycles)
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7. **Commit** with `[verified]` prefix
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See `references/requesting-code-review.md` for the full pipeline including auto-fix patterns.
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See `references/ssrf-python-fastapi.md` for the reusable SSRF URL validation pattern (three-layer defense: scheme + internal IP block + host whitelist).
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See `references/fastapi-route-ordering.md` for the FastAPI route registration order pitfall — literal routes must be placed before parameterized catch-all routes.
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### Cross-Repo Batch Review with Claude Code
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For auditing multiple repos at once (security sweep, post-release review),
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use `claude -p` in non-interactive mode with parallel background processes.
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See `references/claude-code-batch-review.md` for the full recipe:
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`--max-turns 12`, `--dangerously-skip-permissions`, focused file lists,
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and parallel `terminal(background=true)` execution.
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### Multi-Round Code Review Pipeline
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For reviewing implementation code across multiple rounds with dual AI reviewers
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(Claude Code + GLM-5.1), following the pattern: implement → review → fix → re-review → final score.
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See `references/multi-round-code-review.md` for the full pipeline, reviewer selection
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matrix, and Claude Code command template.
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### Three-Round Review Pattern (R1→R2→R3→R4 optional)
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When implementing new features (server + desktop together), use this proven pattern:
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```
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R1: GLM-5.1 (via delegate_task) → find bugs + security issues
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→ fix all 🔴, defer 🟡🟢
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R2: Claude (via terminal background claude -p) → verify R1 findings, check for missed issues
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→ fix all 🔴, apply quality improvements
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R3: Build verification → run typecheck + build, fix any JSX/TS regression
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R4: (optional) Claude Code parallel sweep — two repos, two bg agents
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→ final verification, catch R1/R2 regression-introduced bugs
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```
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**Critical R3 step — Desktop Build Verification:**
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After R2 fixes are merged, the delegate_task subagents may introduce TS/JSX regressions.
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Always run typecheck before build:
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```bash
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npx tsc --noEmit -p tsconfig.web.json --composite false
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```
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If errors: `git stash` → verify original tag has same errors (pre-existing) vs new regression
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→ fix both pre-existing and new errors before build. Common pre-existing bugs in
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tag-checkout code: `<>` fragments missing `</>`, `"json" in {}` needing `typeof` guard,
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unused imports (TS6133). **tsconfig.web.json errors DO block the build pipeline**
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(unlike tsconfig.node.json config-level warnings).
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**When to add R4:** After feature is "done" and all prior rounds fixed, run
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Claude Code (`terminal(background=true, notify_on_complete=true)`) in parallel
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for both server + desktop repos. This catches subtle regressions that R1 fixes
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sometimes introduce (wrong import sources, stale closures in React hooks,
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defensive-but-broken error handling).
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**R4 invocation template:**
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```bash
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# Launch two parallel Claude Code reviews:
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# (1) Server repo review
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terminal(command="cd ~/repo && claude -p '<review prompt>' \\
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--output-format text --max-turns 12 --dangerously-skip-permissions 2>&1",
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background=true, notify_on_complete=true, timeout=600)
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# (2) Desktop repo review (launch simultaneously)
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terminal(command="cd ~/desktop && claude -p '<review prompt>' \\
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--output-format text --max-turns 10 --dangerously-skip-permissions 2>&1",
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background=true, notify_on_complete=true, timeout=600)
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```
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**Critical lesson from R1→R2:** R1 fixes can introduce new 🔴 bugs:
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- Adding validation code but **forgetting required imports** (e.g., `HTTPException`/`status` not imported after adding error handling)
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- Moving imports between sources but landing them in the **wrong module** (e.g., `ChevronDown` from `"react"` instead of `"lucide-react"`)
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- Adding defensive `finally { if (state === X) setState(Y) }` but reading a **stale closure** — the fix is `finally { setState(null) }` without reading old state
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- → R2 must explicitly re-check every R1-modified line, not just the original code
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**R3 checklist (manual):**
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```bash
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# Compile check
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python3 -m py_compile <all changed files>
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# Import verification (for Python)
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PYTHONPATH=backend python3 -c "from app.api.v2.sourcing import _validate_url; print('OK')"
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# Duplicate detection
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grep -c "KEY_DEFINITION" <file> # must be 1
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# Import hygiene
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grep "from.*import" <file> | sort | uniq -c | grep -v "^ *1 "
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# Cross-file consistency: no feature in wrong file
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grep -c "a2aInbox" Mail.tsx # should be >0
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grep -c "a2aInbox" Tools.tsx # should be 0
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# SSRF: validate URL guard regex (see references/ssrf-python-fastapi.md)
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python3 -c "
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import re
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p = re.compile(r'^(https?://)?(127\.|...)<regex>', re.IGNORECASE)
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assert p.match('http://127.0.0.1:8080')
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assert not p.match('http://detail.1688.com/offer/123.html')
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print('SSRF regex OK')
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"
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```
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## Section 7: Subagent-Driven Development
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Execute plans by dispatching fresh subagents per task with two-stage review.
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### Process
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1. Read plan once, extract all tasks, create todo list
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2. Per task:
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- **Dispatch implementer** — full context in `delegate_task`, never make subagent read the plan file
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- **Spec compliance review** — does implementation match original spec?
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- **Code quality review** — style, error handling, coverage, security
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- Fix issues → re-review → mark complete
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3. Final integration review across all tasks
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4. Full test suite + commit
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### Red Flags
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- Spec compliance MUST pass before code quality review (wrong order otherwise)
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- Never dispatch multiple subagents for tasks that touch the same files
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- Never let implementer self-review replace actual review
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- Fresh subagent per task prevents context pollution
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See `references/subagent-driven-development.md` for the full process, including context budget discipline and gates taxonomy.
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