Session Sync

One-shot update specs/*.md + project-tech.json from current session context.

Design: Scan context -> extract -> write. No interactive wizards.

Usage

$session-sync                        # Sync with preview + confirmation
$session-sync -y                     # Auto-sync, skip confirmation
$session-sync "Added JWT auth flow"  # Sync with explicit summary
$session-sync -y "Fixed N+1 query"   # Auto-sync with summary

Process

Step 1: Gather Context
   |- git diff --stat HEAD~3..HEAD (recent changes)
   |- Active session folder (.workflow/.lite-plan/*) if exists
   +- User summary ($ARGUMENTS or auto-generate from git log)

Step 2: Extract Updates
   |- Guidelines: conventions / constraints / learnings
   +- Tech: development_index entry

Step 3: Preview & Confirm (skip if --yes)

Step 4: Write both files

Step 5: One-line confirmation

Implementation

Step 1: Gather Context

const AUTO_YES = "$ARGUMENTS".includes('--yes') || "$ARGUMENTS".includes('-y')
const userSummary = "$ARGUMENTS".replace(/--yes|-y/g, '').trim()

// Recent changes
const gitStat = Bash('git diff --stat HEAD~3..HEAD 2>/dev/null || git diff --stat HEAD 2>/dev/null')
const gitLog = Bash('git log --oneline -5')

// Active session (optional)
const sessionFolders = Glob('.workflow/.lite-plan/*/plan.json')
let sessionContext = null
if (sessionFolders.length > 0) {
  const latest = sessionFolders[sessionFolders.length - 1]
  sessionContext = JSON.parse(Read(latest))
}

// Build summary
const summary = userSummary
  || sessionContext?.summary
  || gitLog.split('\n')[0].replace(/^[a-f0-9]+ /, '')

Step 2: Extract Updates

Analyze context and produce two update payloads. Use LLM reasoning (current agent) -- no CLI calls.

// -- Guidelines extraction --
// Scan git diff + session for:
//   - New patterns adopted -> convention
//   - Restrictions discovered -> constraint
//   - Surprises / gotchas -> learning
//
// Output: array of { type, category, text }
// RULE: Only extract genuinely reusable insights. Skip trivial/obvious items.
// RULE: Deduplicate against existing guidelines before adding.

// Load existing specs via ccw spec load
const existingSpecs = Bash('ccw spec load --dimension specs 2>/dev/null || echo ""')
const guidelineUpdates = [] // populated by agent analysis

// -- Tech extraction --
// Build one development_index entry from session work

function detectCategory(text) {
  text = text.toLowerCase()
  if (/\b(fix|bug|error|crash)\b/.test(text)) return 'bugfix'
  if (/\b(refactor|cleanup|reorganize)\b/.test(text)) return 'refactor'
  if (/\b(doc|readme|comment)\b/.test(text)) return 'docs'
  if (/\b(add|new|create|implement)\b/.test(text)) return 'feature'
  return 'enhancement'
}

function detectSubFeature(gitStat) {
  // Most-changed directory from git diff --stat
  const dirs = gitStat.match(/\S+\//g) || []
  const counts = {}
  dirs.forEach(d => {
    const seg = d.split('/').filter(Boolean).slice(-2, -1)[0] || 'general'
    counts[seg] = (counts[seg] || 0) + 1
  })
  return Object.entries(counts).sort((a, b) => b[1] - a[1])[0]?.[0] || 'general'
}

const techEntry = {
  title: summary.slice(0, 60),
  sub_feature: detectSubFeature(gitStat),
  date: new Date().toISOString().split('T')[0],
  description: summary.slice(0, 100),
  status: 'completed',
  session_id: sessionContext ? sessionFolders[sessionFolders.length - 1].match(/lite-plan\/([^/]+)/)?.[1] : null
}

Step 3: Preview & Confirm

// Show preview
console.log(`
-- Sync Preview --

Guidelines (${guidelineUpdates.length} items):
${guidelineUpdates.map(g => `  [${g.type}/${g.category}] ${g.text}`).join('\n') || '  (none)'}

Tech [${detectCategory(summary)}]:
  ${techEntry.title}

Target files:
  .ccw/specs/*.md
  .workflow/project-tech.json
`)

if (!AUTO_YES) {
  const answer = functions.request_user_input({
    questions: [{
      header: "确认同步",
      id: "confirm_sync",
      question: "Apply these updates? (modify/skip items if needed)",
      options: [
        { label: "Apply(Recommended)", description: "Apply all extracted updates to specs and project-tech.json" },
        { label: "Cancel", description: "Abort sync, no changes made" }
      ]
    }]
  })  // BLOCKS (wait for user response)
  if (answer.answers.confirm_sync.answers[0] !== "Apply(Recommended)") {
    console.log('Sync cancelled.')
    return
  }
}

Step 4: Write

// -- Update specs/*.md --
// Uses .ccw/specs/ directory (same as frontend/backend spec-index-builder)
if (guidelineUpdates.length > 0) {
  // Map guideline types to spec files
  const specFileMap = {
    convention: '.ccw/specs/coding-conventions.md',
    constraint: '.ccw/specs/architecture-constraints.md',
    learning: '.ccw/specs/coding-conventions.md' // learnings appended to conventions
  }

  for (const g of guidelineUpdates) {
    const targetFile = specFileMap[g.type]
    const existing = Read(targetFile)
    const ruleText = g.type === 'learning'
      ? `- [${g.category}] ${g.text} (learned: ${new Date().toISOString().split('T')[0]})`
      : `- [${g.category}] ${g.text}`

    // Deduplicate: skip if text already in file
    if (!existing.includes(g.text)) {
      const newContent = existing.trimEnd() + '\n' + ruleText + '\n'
      Write(targetFile, newContent)
    }
  }

  // Rebuild spec index after writing
  Bash('ccw spec rebuild')
}

// -- Update project-tech.json --
const techPath = '.workflow/project-tech.json'
const tech = JSON.parse(Read(techPath))

if (!tech.development_index) {
  tech.development_index = { feature: [], enhancement: [], bugfix: [], refactor: [], docs: [] }
}

const category = detectCategory(summary)
tech.development_index[category].push(techEntry)
tech._metadata.last_updated = new Date().toISOString()

Write(techPath, JSON.stringify(tech, null, 2))

Step 5: Confirm

Synced: ${guidelineUpdates.length} guidelines + 1 tech entry [${category}]

Error Handling

Error	Resolution
File missing	Create scaffold (same as $spec-setup Step 4)
No git history	Use user summary or session context only
No meaningful updates	Skip guidelines, still add tech entry
Duplicate entry	Skip silently (dedup check in Step 4)

Related Commands

• $spec-setup - Initialize project with specs scaffold
• $spec-add - Interactive wizard to create individual specs with scope selection
• $workflow-plan - Start planning with initialized project context