/backdate-program

Backdating $ARGUMENTS

Coordinate a multi-agent workflow to add historical date entries, fix reference quality, review formula correctness, and improve test coverage for an existing state program's parameters.

READ THE PLAN: Detailed agent prompts, lessons learned, and state-specific notes are in the memory file state-tanf-backdate-plan.md. This command is the executable orchestration layer.

GLOBAL RULE — PDF Page Numbers: Every PDF reference href MUST end with #page=XX (the file page number, NOT the printed page number). The ONLY exception is single-page PDFs. This rule applies to ALL agents in ALL phases — research, implementation, audit, and finalize. Include this instruction in every agent prompt that touches parameter YAML files.

Arguments

$ARGUMENTS should contain:

• State and program (required) — e.g., CT TFA, IN TANF, KY K-TAP
• Target year (optional) — how far back to research, e.g., 1997. Defaults to program inception.
• Options:
  • --skip-review — skip Phase 6 (built-in /review-program)
  • --values-only — skip reference/formula audit (Phase 2), only backdate parameter values
  • --research-only — stop after Phase 1 (research), produce impl spec but don't implement
  • --600dpi — render all PDFs at 600 DPI instead of 300 DPI (use for scanned docs, poor-quality PDFs, or dense tables that are hard to read at 300 DPI)

Examples:

/backdate-program CT TFA
/backdate-program IN TANF 2005
/backdate-program KY K-TAP --values-only
/backdate-program NE ADC --research-only
/backdate-program VA TANF --600dpi

---

YOUR ROLE: ORCHESTRATOR ONLY

CRITICAL — Context Window Protection:

• You are an orchestrator. You do NOT read raw file contents, grep output, research findings, or PDF data.
• ALL information-gathering work is delegated to agents.
• You only read files marked "Short" in the handoff table (max 25 lines each).
• ALL data flows through files on disk (see Phase 1 consolidation).
• When spawning agents, point them to files on disk — do NOT paste data into prompts.

You MUST NOT:

• Read parameter YAML files or variable .py files
• Read research findings from task descriptions
• Read audit reports in full
• Paste file contents or research data into agent prompts

You DO:

• Parse arguments
• Create team and tasks
• Spawn agents (in parallel where possible)
• Read SHORT summary files (≤25 lines)
• Present checkpoints to user
• Shut down agents when done

---

Phase 0: Parse Arguments & Inventory

Step 0A: Parse Arguments & Clean Up

Clean up leftover files from previous runs (prevents stale data from confusing agents):

# Clean /backdate-program files (use {st}-{prog} prefix after parsing)
rm -f /tmp/{st}-{prog}-*.md
# Derive PREFIX for reading /review-program output files (Phase 6)
PREFIX=$(git branch --show-current | tr '/' '-')
PREFIX=${PREFIX:-review-program}
# Note: /review-program's own Step 0A handles its file cleanup

Parse $ARGUMENTS:
- STATE: state abbreviation (e.g., "ct", "in")
- STATE_FULL: full state name (e.g., "Connecticut")
- PROGRAM: program abbreviation (e.g., "tfa", "tanf")
- TARGET_YEAR: target year (default: program inception year, typically 1996-1997)
- OPTIONS: --skip-review, --values-only, --research-only, --600dpi
- DPI: 600 if --600dpi, else 300

Resolve LESSONS_PATH (used in Phase 3 agent prompts):

# The auto-memory directory for this project — resolve the concrete path
LESSONS_PATH=$(ls -d ~/.claude/projects/*/memory 2>/dev/null | head -1)/agent-lessons.md

Pass {LESSONS_PATH} to all implementation agent prompts (Phase 3, Phase 6C).

Step 0B: Issue + Inventory (SPAWN BOTH IN ONE MESSAGE)

These two agents have no dependency on each other. Spawn them in a single message so they run concurrently:

Agent 1: issue-manager — searches GitHub (network calls)

subagent_type: "complete:country-models:issue-manager"
name: "issue-manager"
run_in_background: true

"Find or create a GitHub issue and draft PR for backdating {STATE_FULL} {PROGRAM} parameters.

1. Search for existing issues related to '{STATE_FULL} {PROGRAM}' backdating.
   If none found, create one with title: 'Backdate {STATE_FULL} {PROGRAM} parameters to {TARGET_YEAR}'.
2. Search for existing PRs related to '{STATE_FULL} {PROGRAM}'.
   If none found, create a new branch and a draft PR. To create the initial commit:
   - Preferred: create a changelog fragment (echo 'Backdate {STATE_FULL} {PROGRAM} parameters.' > changelog.d/{branch}.added.md)
   - Fallback: if the repo rejects that, use --allow-empty for the commit
3. Return both the issue number and PR number."

Agent 2: inventory — scans local files (disk reads)

Spawn a general-purpose agent (needs Write tool) to inventory existing files:

subagent_type: "general-purpose"
name: "inventory"
run_in_background: true

"Inventory {STATE} {PROGRAM} parameter and variable files. Write TWO files:

1. FULL inventory for agents: /tmp/{st}-{prog}-inventory.md
   - List of parameter YAML files (full paths)
   - Earliest date entry in each file
   - YAML structure pattern (family-size breakdown vs scalar vs scale)
   - List of variable .py files (full paths)
   - List of test .yaml files (full paths)
   No line limit — agents need the complete picture.

2. SHORT summary for orchestrator: /tmp/{st}-{prog}-inventory-summary.md (MAX 10 LINES)
   - Parameter files: {count}
   - Variable files: {count}
   - Test files: {count}
   - Earliest date found: {YYYY-MM-DD}
   - Program path: parameters/gov/states/{st}/{prog}/
   Numbers only — no file paths."

After both agents complete:

• Read ONLY /tmp/{st}-{prog}-inventory-summary.md (max 10 lines) — just counts and the program path
• Store from issue-manager:
  • ISSUE_NUMBER — referenced in commit messages, changelog, and final report
  • PR_NUMBER — used by /review-program in Phase 6, and by pr-pusher in Phase 7
  • BRANCH — the working branch for all implementation

These are used throughout the workflow:

• Review-fix loop commits: "Review-fix round {N}: address critical issues (ref #{ISSUE_NUMBER})"
• Phase 6: /review-program {PR_NUMBER} --local --full
• Phase 7: pr-pusher pushes to the branch, reporter writes PR description
• Final report: links to issue and PR

Step 0C: Create Team

TeamCreate(team_name="{st}-{prog}-backdate")

Step 0D: Create Tasks

Create all tasks upfront with dependencies. Adjust count based on inventory.

Task	Description	Blocked By
discover-sources	Find all historical PDFs for {STATE} {PROGRAM}	—
secondary-validation	Download WRDTP/CRS/CBPP cross-check tables	—
prep-pdf-1	Download and render first PDF (slim — no page mapping)	discover-sources
prep-pdf-2	Download and render second PDF (slim — no page mapping)	discover-sources
research-pdf-1-{a,b,...}	Self-map sections + extract parameter values from first PDF (1-5 agents based on page count)	prep-pdf-1
research-pdf-2-{a,b,...}	Self-map sections + extract parameter values from second PDF (1-5 agents based on page count)	prep-pdf-2
consolidate	Merge findings into implementation spec	all research + secondary
audit-references	Validate all existing reference URLs and citations	consolidate
audit-formulas	Review variable formulas vs. regulations	consolidate
impl-parameters	Add date entries + fix references in parameter files	audit-references, audit-formulas
impl-formulas	Apply formula fixes (if user-approved)	audit-formulas
impl-tests	Add historical + boundary + dimension tests	impl-parameters
impl-edge-cases	Generate edge case tests	impl-tests
validate-and-fix	implementation-validator + ci-fixer + make format	impl-edge-cases
push-implementation	Commit + push all Phase 3-5 work to remote	validate-and-fix
review-fix-loop	Review-fix loop: /review-program → fix → re-review until 0 critical (max 3 rounds)	push-implementation
finalize	Changelog, push, final report	review-fix-loop

Skip audit-references, audit-formulas, impl-formulas if --values-only. Stop after consolidate if --research-only. Skip review-fix-loop if --skip-review.

Step 0E: Spawn Research Agents

Spawn ALL research agents in a single message for maximum parallelism:

Agent Name	Type	Starts On
discovery	complete:country-models:document-collector	discover-sources (immediate)
secondary-validator	general-purpose	secondary-validation (immediate)
prep-1	general-purpose	Waits for discovery message
prep-2	general-purpose	Waits for discovery message

Research agents are spawned AFTER prep agents report page counts — see "Large PDF Splitting" below.

Agent type rationale:

• document-collector is purpose-built for discovering regulatory sources (WebSearch, WebFetch, Bash for curl/pdftotext). It writes to sources/working_references.md.
• Prep agents need Bash (pdftoppm, pdfinfo) — general-purpose is required for PDF rendering. Prep agents are intentionally slim — they only download, render, and report page count. They do NOT create page maps or read full PDF text (this caused context blowouts in past runs).
• Research agents need Read (PNG screenshots) + Read (YAML files) + SendMessage — general-purpose is required for PDF reading. Research agents self-map their assigned pages (identify sections before extracting values).
• Secondary validator needs WebSearch + WebFetch for WRDTP/CBPP — general-purpose works.

Agents communicate directly via SendMessage — you do NOT relay.

discovery → finds PDF URL → messages prep-1: "Download and render: [URL]"
prep-1 → downloads, renders at {DPI} DPI → messages Main Claude: "Ready: {path}, {page_count} pages, TOC hint: ..."
Main Claude → reads page count → spawns research agents with page-range assignments
research agents → self-map sections in their page range → extract values → update task with findings

Agent prompts must include:

• The inventory file path: /tmp/{st}-{prog}-inventory.md
• PDF rendering DPI: {DPI} (pass pdftoppm -png -r {DPI} to prep agents)
• HISTORICAL ERA AWARENESS: check for predecessor program values (AFDC→TANF, FSP→SNAP)
• Use Wayback Machine for archived sources
• Escalation rules: EXTERNAL DOCUMENT NEEDED, CROSS-REFERENCE NEEDED
• Continue working while waiting — never block on an escalation

document-collector prompt additions:

"In addition to your standard research workflow, also:
- Search for ALL historical state plan periods (not just the current one)
- Search Wayback Machine for archived versions of web-based sources
- Check ACF (federal) for approved state plans: site:acf.hhs.gov {State} {PROGRAM}
- When you find a PDF, message prep-{N}: 'Download and render: [URL] — [title]'
- Continue searching while prep agents work — don't block"

Prep agent prompt — SLIM (context-safe):

"You are a lightweight PDF renderer. Your ONLY job is to download, render, and report — NOT to analyze content.

When you receive a message from the discovery agent with a PDF URL:

1. Download:
   curl -L -o /tmp/{st}-{prog}-{doc_id}.pdf '[URL]'

2. Get page count:
   pdfinfo /tmp/{st}-{prog}-{doc_id}.pdf | grep Pages

3. Render at {DPI} DPI:
   pdftoppm -png -r {DPI} /tmp/{st}-{prog}-{doc_id}.pdf /tmp/{st}-{prog}-{doc_id}-page

4. Quick TOC hint (ONLY first 5 pages — do NOT read more):
   pdftotext -f 1 -l 5 /tmp/{st}-{prog}-{doc_id}.pdf - | head -80

5. Message Main Claude (NOT research agents) with:
   - PDF file path
   - Total page count
   - Screenshot path pattern (e.g., /tmp/{st}-{prog}-{doc_id}-page-*.png)
   - TOC hint (the first ~80 lines of text, if a table of contents was found)
   - Page offset if obvious from the first few pages (e.g., cover page before page 1)

DO NOT:
- Read the full pdftotext output (this blows your context window)
- Read any PNG screenshots (research agents will do this)
- Create a detailed page map (research agents self-map their assigned pages)
- Analyze the PDF content in any way

If the PDF fails to download or is corrupt, message the discovery agent:
  'DOWNLOAD FAILED: [URL] — [error]. Can you find an alternative source?'

Main Claude will decide how many research agents to spawn based on page count."

Large PDF Splitting for Research Agents

Main Claude decides the research agent count after each prep agent reports back. Each research agent should read at most ~40 pages.

PDF page count	Research agents per PDF	Assignment
≤40	1	Full PDF
41-80	2	Split at midpoint
81-120	3	~40 pages each
121-160	4	~40 pages each
161+	5	~32-40 pages each

Spawn all research agents for a PDF in a single message for maximum parallelism. Each gets:

• Its assigned page range (e.g., pages 1-40, 41-80, 81-120)
• The SAME inventory file and parameter file list
• The SAME escalation rules (CROSS-REFERENCE NEEDED, EXTERNAL DOCUMENT NEEDED)
• The TOC hint from prep (if available) — helps orient but is NOT a substitute for reading pages
• Instructions to self-map their section, then extract values

Research agent prompt template:

"You are extracting {PROGRAM} parameter values from a PDF for {STATE}.

Your assigned page range: pages {START}-{END} of /tmp/{st}-{prog}-{doc_id}-page-*.png
TOC hint from prep agent (first 5 pages only): {TOC_HINT_OR_'None available'}

STEP 1 — SELF-MAP (do this first):
Quickly scan your assigned page screenshots to identify what sections/topics they cover:
- Payment standards tables
- Income eligibility limits (gross/net)
- Earned income disregards / deductions
- Resource limits
- Eligibility criteria
- Special provisions
Note the page numbers for each section you find.

STEP 2 — EXTRACT VALUES:
For EVERY parameter value you find, record:
- Parameter name (payment standard, need standard, gross income limit, etc.)
- Value (dollar amount, percentage, etc.)
- Family size (if applicable — record the full table)
- Effective date (look for 'effective [date]', fiscal year headers, amendment dates)
- PDF page number (for citation — use file page number, NOT printed page number)
- Exact quote or table header that confirms the value

STEP 3 — CROSS-REFERENCE:
Read the existing repo parameter files listed in /tmp/{st}-{prog}-inventory.md.
For each repo parameter, note whether you found a corresponding value in your pages.
If not found, note 'NOT FOUND IN MY PAGE RANGE' (another agent may have it).

STEP 4 — REPORT:
Update your task with findings. Include your section map at the top so the
consolidator knows what topics each page range covered.

ESCALATION RULES:
- If your pages reference a different document: 'EXTERNAL DOCUMENT NEEDED: [title] at [URL]'
- If a value depends on content outside your page range: 'CROSS-REFERENCE NEEDED: [description]'
- Continue working on other values — do NOT block on escalations."

Example: A 150-page state plan → prep-1 reports 150 pages → Main Claude spawns 4 research agents:

research-1a: pages 1-38
research-1b: pages 39-76
research-1c: pages 77-114
research-1d: pages 115-150

All 4 run in parallel. Each self-maps its section, then extracts values. The consolidator (Phase 1) merges their findings and reconciles cross-references.

---

Phase 1: Consolidation & Checkpoint

Consolidation (DELEGATED — biggest context saver)

DO NOT read research findings. Spawn a consolidation agent:

subagent_type: "general-purpose", team_name: "{st}-{prog}-backdate", name: "consolidator"

"Merge all research findings for {STATE} {PROGRAM} backdating.
1. Read ALL task findings from task list (TaskList + TaskGet)
2. Read inventory at /tmp/{st}-{prog}-inventory.md
3. Read existing parameter YAML files listed in inventory
4. Read sources/working_references.md from document-collector
5. Merge into FINAL IMPLEMENTATION SPEC: /tmp/{st}-{prog}-impl-spec.md
   - For EACH parameter file: exact date entries to add, with values + PDF citations
   - Reconcile conflicts (later documents supersede earlier)
   - Reconcile secondary source discrepancies (primary sources win)
   - Categorize: Tier A (YAML backdating), Tier B (new params), Tier C (formula changes)
   - Flag duplicate values (same value at multiple dates — only keep earliest)
5. Write SHORT summary (max 20 lines): /tmp/{st}-{prog}-impl-summary.md"

Regulatory Checkpoint 1

Read ONLY /tmp/{st}-{prog}-impl-summary.md. Present a brief overview:

## {STATE_FULL} {PROGRAM} — Research Complete

**Parameters**: {N} files, {M} date entries to add
**Earliest date**: {YYYY-MM-DD} → backdating to {TARGET_YEAR}
**Source gaps**: {count, if any}

Then walk through decisions one at a time using AskUserQuestion:

Decision 1: Proceed with implementation?

AskUserQuestion:
  Question: "Proceed with backdating {N} parameter files?"
  Options:
    - "Yes, proceed" (default/recommended)
    - "Show me more details first"
    - "Stop here (research only)"

Decision 2: Tier B/C items (only if impl-summary lists any)

For each Tier B/C item, ask separately:

AskUserQuestion:
  Question: "{Description of Tier B/C item}"
  Description: "{Brief context — e.g., 'New parameter needed for provision X, not in current implementation'}"
  Options:
    - "Include — implement this change" (recommended if Tier B)
    - "Skip — defer to follow-up PR"
    - "Need more info"

Decision 3: Source gaps (only if impl-summary lists any)

AskUserQuestion:
  Question: "How to handle {N} source gap(s)?"
  Description: |
    {List each gap, e.g.:
    - No PDF found for 2003-2007 period
    - Two sources disagree on 2010 value}
  Options:
    - "Proceed — use best available data" (recommended)
    - "Pause — let me find the missing sources"

Stop here if --research-only.

---

Phase 2: Reference & Formula Audit

Skip this phase if --values-only.

Spawn two agents in parallel:

Reference Auditor

subagent_type: "complete:reference-validator",
  team_name: "{st}-{prog}-backdate", name: "ref-auditor"

The reference-validator agent is purpose-built for this — it validates that all parameters have proper references that corroborate values. It checks: missing references, format (page numbers, detailed sections), value corroboration, and jurisdiction match.

Additional instructions beyond its defaults:

"Also check these backdate-specific reference issues:

LEARN FROM PAST SESSIONS (read if they exist — skip if not found):
- {LESSONS_PATH}
- ~/.claude/plugins/marketplaces/policyengine-claude/lessons/agent-lessons.md
These contain real mistakes from past runs. Do NOT repeat them.

1. URL LIVENESS: Test every href with curl -sI. Record broken/redirected URLs.
2. STATUTE SPECIFICITY: Must cite specific subsection, not parent section.
   BAD: '§ 17b-112'  GOOD: '§ 17b-112(c)'
3. REFERENCE TITLE DESCRIPTIVENESS: Title must distinguish what this ref is FOR.
   BAD: 'State Plan 2024-2026'  GOOD: 'State Plan 2024-2026, High Earnings Provision'
4. SESSION LAW vs PERMANENT STATUTE: Flag session law refs (Public Act, SB, HB)
   that should cite permanent statutes instead.
5. INSTRUCTION PAGE vs PDF PAGE: Verify #page=XX is the file page, not the printed
   page number. Render the page and confirm content matches.
6. HISTORICAL PLAN COVERAGE: Check for refs to ALL relevant plan periods.
Write findings to /tmp/{st}-{prog}-ref-audit.md."

Formula Reviewer

subagent_type: "complete:country-models:program-reviewer",
  team_name: "{st}-{prog}-backdate", name: "formula-reviewer"

The program-reviewer agent is purpose-built for this — it researches regulations FIRST (independently of code), then validates code against legal requirements. This catches formula gaps and missing provisions.

Additional instructions beyond its defaults:

"Focus on these backdate-specific formula issues:
1. UNUSED PARAMETERS: Check every parameter YAML — is each one used in a formula?
   A parameter that exists but is never read means the feature is unimplemented.
2. ZERO-SENTINEL ANTI-PATTERN: Flag params where value=0 means 'not in effect'.
   Should be an explicit in_effect boolean parameter instead.
3. REDUNDANT LOGIC: Flag mathematically unnecessary operations.
4. HARDCODED COMMENTS: Flag comments with specific numbers (e.g., '92%', '171% FPG').
5. ERA HANDLING: Verify formula uses parameter-driven branching, NOT year-checks.
Read impl spec at /tmp/{st}-{prog}-impl-spec.md for regulatory context.
Write findings to /tmp/{st}-{prog}-formula-audit.md.
Write SHORT summary (max 15 lines) to /tmp/{st}-{prog}-phase2-summary.md."

Regulatory Checkpoint 2

Read ONLY /tmp/{st}-{prog}-phase2-summary.md. Present a brief overview:

## Audit Results

**References**: {N} broken URLs, {M} generic refs, {P} missing subsections
**Formulas**: {X} unused params, {Y} zero-sentinels, {Z} missing provisions

Then walk through decisions using AskUserQuestion:

Decision 1: Reference fixes

AskUserQuestion:
  Question: "Apply {N} reference fixes? (broken URLs, missing page numbers, generic citations)"
  Options:
    - "Yes, fix all" (default/recommended)
    - "Show me the list first"
    - "Skip reference fixes"

Decision 2: Formula fixes (only if audit found formula issues)

Ask for each formula fix category separately:

AskUserQuestion:
  Question: "Fix {X} unused parameters? (parameters exist but no formula reads them)"
  Options:
    - "Yes, wire them into formulas" (recommended)
    - "Skip — defer to follow-up"
    - "Show me which ones"

AskUserQuestion:
  Question: "Fix {Y} zero-sentinel anti-patterns? (value=0 used instead of explicit in_effect boolean)"
  Options:
    - "Yes, refactor to in_effect pattern" (recommended)
    - "Skip — cosmetic, defer"

AskUserQuestion:
  Question: "Implement {Z} missing provisions? (regulations found but not yet coded)"
  Description: "{Brief list of missing provisions}"
  Options:
    - "Yes, implement all"
    - "Let me pick which ones"
    - "Skip — defer to follow-up PR"

---

Phase 3: Implementation

Spawn implementation agents in parallel. Each reads specs from disk — NOT from your prompt.

Tier A: Parameter Backdating (most common)

subagent_type: "complete:country-models:rules-engineer",
  team_name: "{st}-{prog}-backdate", name: "impl-parameters"

The rules-engineer agent designs and modifies parameter structures with proper federal/state separation and zero hard-coding. It has Read, Write, Edit, MultiEdit, Grep, Glob, Skill access.

Instructions:

"Add historical date entries to {STATE} {PROGRAM} parameter files AND apply reference fixes.
Load skills: /policyengine-parameter-patterns, /policyengine-period-patterns.
Read impl spec at /tmp/{st}-{prog}-impl-spec.md (parameter values to add).
Read ref audit at /tmp/{st}-{prog}-ref-audit.md (reference fixes to apply).

LEARN FROM PAST SESSIONS (read if they exist — skip if not found):
- {LESSONS_PATH}
- ~/.claude/plugins/marketplaces/policyengine-claude/lessons/agent-lessons.md
These contain real mistakes from past runs. Do NOT repeat them.

RULES:
- Preserve existing YAML structure EXACTLY (indentation, key ordering, metadata)
- Add entries in chronological order (earliest first, before existing entries)
- NO DUPLICATE VALUES: if value unchanged, one entry at earliest date only
- Descriptions one sentence
- PDF hrefs include #page=XX (file page number, NOT printed page number)
- Fix all reference issues from ref-audit alongside value backdating
- Use federal fiscal year dates (YYYY-10-01) unless source specifies otherwise

REUSE EXISTING VARIABLES AND PARAMETERS:
PolicyEngine-US has hundreds of existing variables for common concepts (fpg, smi,
tanf_fpg, is_tanf_enrolled, ssi, tanf_gross_earned_income, snap_gross_income, etc.).
Before creating ANY non-program-specific parameter or variable, Grep the codebase to
check if it already exists. Only create new ones for state-program-specific concepts.

PATTERNS FOR NEW PARAMETERS (Tier B):
When the impl spec calls for a NEW parameter that didn't exist before, follow these patterns.
Study existing files in the same program first to match naming and structure.

Pattern 1 — in_effect boolean (provision that starts/ends at a specific date):
  Create a new YAML file at the appropriate subfolder with in_effect.yaml:
  ```yaml
  # e.g., payment/high_earnings/in_effect.yaml
  description: {State} uses this indicator to determine whether {provision} applies under {program}.
  values:
    {start-date}: false    # before provision existed
    {effective-date}: true  # when it took effect
  metadata:
    unit: bool
    period: month
    label: {State} {program} {provision} in effect
    reference:
      - title: {specific regulation}
        href: {url}#page={XX}

Companion value parameters go alongside (e.g., high_earnings/rate.yaml, high_earnings/reduction_rate.yaml).

Pattern 2 — regional in_effect (provision that varies by region, then stops): Create a boolean parameter controlling the regional/non-regional split:

# e.g., payment/regional_in_effect.yaml
description: {State} uses this indicator to determine whether regional payment standards apply under {program}.
values:
  {start-date}: true     # regional standards active
  {end-date}: false       # switched to flat statewide standard
metadata:
  unit: bool
  period: month
  label: {State} {program} regional payment standards in effect
  reference:
    - title: {specific regulation}
      href: {url}#page={XX}

Regional value parameters go in subfolder: regional/region_a/amount.yaml, regional/region_b/amount.yaml, etc. Flat statewide parameter at: amount.yaml (same level as regional_in_effect.yaml)."

### Tier B/C: New Parameters & Formula Changes (if user-approved)

subagent_type: "complete:country-models:rules-engineer", team_name: "{st}-{prog}-backdate", name: "impl-formulas"

The `rules-engineer` agent implements government benefit program rules with zero hard-coded values and complete parameterization. It has the full tool set (Read, Write, Edit, MultiEdit, Grep, Glob, Bash, Skill).

**Instructions:**

"Apply formula fixes for {STATE} {PROGRAM} identified in the formula audit. Load skills: /policyengine-variable-patterns, /policyengine-code-style, /policyengine-parameter-patterns, /policyengine-period-patterns, /policyengine-vectorization. Read formula audit at /tmp/{st}-{prog}-formula-audit.md.

LEARN FROM PAST SESSIONS (read if they exist — skip if not found):

• {LESSONS_PATH}
• ~/.claude/plugins/marketplaces/policyengine-claude/lessons/agent-lessons.md These contain real mistakes from past runs. Do NOT repeat them.

REUSE EXISTING VARIABLES AND PARAMETERS: PolicyEngine-US has hundreds of existing variables for common concepts (fpg, smi, tanf_fpg, is_tanf_enrolled, ssi, tanf_gross_earned_income, snap_gross_income, etc.). Before creating ANY non-program-specific variable, Grep the codebase to check if it already exists. Only create new ones for state-program-specific concepts.

FIXES TO APPLY:

• Create in_effect boolean parameters (replacing zero-sentinels)
• Wire unused parameters into formulas
• Remove redundant logic
• Replace hardcoded numbers in comments with parameter/statute references
• All logic changes are parameter-driven — NEVER use year-checks (period.start.year)

VARIABLE PATTERNS FOR in_effect AND regional_in_effect: Study existing variables in the same program first to match style.

Pattern 1 — Using in_effect for a provision that starts at a specific date: The parameter tree has: high_earnings/in_effect (bool), high_earnings/rate, high_earnings/reduction_rate. In the variable formula, use if p.high_earnings.in_effect: to gate the logic:

def formula(spm_unit, period, parameters):
    p = parameters(period).gov.states.{st}.{agency}.{prog}.payment
    raw_benefit = ...  # base calculation always runs
    # New provision gated by in_effect boolean
    if p.high_earnings.in_effect:
        threshold = p.high_earnings.rate * some_base
        applies = income >= threshold
        reduction = 1 - p.high_earnings.reduction_rate
        return where(applies, raw_benefit * reduction, raw_benefit)
    return raw_benefit

The if p.in_effect: branch is NEVER entered for periods before the effective date. No year-checks needed — the parameter handles the time logic.

Pattern 2 — Using regional_in_effect for region-based variation: The parameter tree has: regional_in_effect (bool), regional/region_a/amount, regional/region_b/amount, amount (flat). In the variable formula, use if p.regional_in_effect: to switch between regional and flat:

def formula(spm_unit, period, parameters):
    p = parameters(period).gov.states.{st}.{agency}.{prog}.payment
    capped_size = min_(size, p.max_unit_size)
    if p.regional_in_effect:
        region = spm_unit.household('{st}_{prog}_region', period)
        region_a = region == region.possible_values.REGION_A
        region_c = region == region.possible_values.REGION_C
        return select(
            [region_a, region_c],
            [p.regional.region_a.amount[capped_size],
             p.regional.region_c.amount[capped_size]],
            default=p.regional.region_b.amount[capped_size],
        )
    return p.amount[capped_size]

When regional_in_effect is false, it falls through to the flat amount.

CRITICAL: These patterns use if p.some_bool: (not where()). This works because PolicyEngine parameter booleans are scalar per-period — they don't vary across entities. Use where() for entity-level conditions (income >= threshold), if p.flag: for period-level switches (provision in effect or not)."

---

## Phase 4: Tests

After implementation agents complete, spawn TWO test agents in sequence:

### Step 4A: Test Creator

subagent_type: "complete:country-models:test-creator", team_name: "{st}-{prog}-backdate", name: "test-creator"

The `test-creator` agent creates comprehensive integration tests ensuring realistic calculations. It has Read, Write, Edit, MultiEdit, Grep, Glob, Bash, Skill access.

**Instructions:**

"Add tests for {STATE} {PROGRAM} backdating. Load skills: /policyengine-testing-patterns, /policyengine-period-patterns. Read impl spec at /tmp/{st}-{prog}-impl-spec.md. Read existing test files listed in /tmp/{st}-{prog}-inventory.md.

LEARN FROM PAST SESSIONS (read if they exist — skip if not found):

• {LESSONS_PATH}
• ~/.claude/plugins/marketplaces/policyengine-claude/lessons/agent-lessons.md These contain real mistakes from past runs. Do NOT repeat them.

COVERAGE REQUIREMENTS:

1. Existing untested features: test EVERY parameter, not just newly backdated ones
2. Period transition boundaries: test in the period AFTER every value change date
3. All dimension values: test ALL regions/tiers/filing statuses, not just defaults
4. Integration tests at era boundaries: full pipeline (eligibility → income → benefit)

GOTCHAS:

• absolute_error_margin: 0.1 REQUIRED on every test case
• Test naming: 'Case N, description.' (numbered, comma, period)
• Period: Only YYYY-01 or YYYY (no YYYY-10, no full dates)"

### Step 4B: Edge Case Generator

subagent_type: "complete:country-models:edge-case-generator", team_name: "{st}-{prog}-backdate", name: "edge-case-gen"

The `edge-case-generator` analyzes the variables and parameters to automatically generate comprehensive edge case tests (boundary conditions, zero values, maximums).

**Instructions:**

"Generate edge case tests for {STATE} {PROGRAM}. Load skills: /policyengine-testing-patterns, /policyengine-period-patterns. Analyze variables and parameters in the program folder.

LEARN FROM PAST SESSIONS (read if they exist — skip if not found):

• {LESSONS_PATH}
• ~/.claude/plugins/marketplaces/policyengine-claude/lessons/agent-lessons.md These contain real mistakes from past runs. Do NOT repeat them.

Focus on:

• Income just above/below thresholds
• Family size at min/max boundaries
• Zero income, maximum income
• Interaction between features (e.g., housing subsidy + high earner reduction)"

---

## Phase 5: Validation & Fix

### Step 5A: Implementation Validator

subagent_type: "complete:country-models:implementation-validator"

"Validate {STATE} {PROGRAM} implementation for PolicyEngine standards compliance. Load skills: /policyengine-variable-patterns, /policyengine-parameter-patterns, /policyengine-code-style, /policyengine-period-patterns. Check naming conventions, folder structure, parameter formatting, variable code style. Boolean toggle date alignment: when a boolean parameter (in_effect, regional_in_effect, flat_applies) changes value at date D, verify that ALL parameters it gates have entries that cover date D. A gap means PolicyEngine backward-extrapolates a later value, which may be incorrect. Flag as CRITICAL. Duplicate variable detection: if any new variable was created for a common concept (FPG, SMI, gross income, enrollment status), Grep the codebase to check if an existing variable already covers it. PolicyEngine-US has hundreds of reusable variables. Flag duplicates. Files to validate: parameter and variable files listed in /tmp/{st}-{prog}-inventory.md Write findings to /tmp/{st}-{prog}-impl-validation.md."

### Step 5B: CI Fixer

subagent_type: "complete:country-models:ci-fixer" "Run tests for {STATE} {PROGRAM}, fix failures, iterate until all pass. After tests pass, run make format as a final step."

### Quick Audit (context-safe)

Spawn a `general-purpose` agent (needs Write tool for the report file) to check ci-fixer's work:

subagent_type: "general-purpose" name: "quick-auditor"

"Review git diff of changes. Check for: hard-coded values to pass tests, year-check conditionals (period.start.year), altered parameter values. Write SHORT report (max 15 lines) to /tmp/{st}-{prog}-checkpoint.md: PASS/FAIL + issues."

Read ONLY the checkpoint file.

### Step 5C: Push to Remote

**Phase 6 requires code on the remote.** `/review-program` reads the PR via `gh pr diff $PR_NUMBER` (GitHub remote API), so local-only commits are invisible. Push all Phase 3-5 work before entering the review-fix loop:

```bash
# Stage only the program's directories — avoid staging unintended files
git add policyengine_us/parameters/gov/states/{st}/ policyengine_us/variables/gov/states/{st}/ policyengine_us/tests/policy/baseline/gov/states/{st}/
git commit -m "Backdate {STATE} {PROGRAM} parameters to {TARGET_YEAR} (ref #{ISSUE_NUMBER})"
git push

Skip this step if --skip-review (Phase 6 won't run).

---

Phase 6: Review-Fix Loop

Skip if --skip-review.

This phase runs /review-program and fixes critical issues in a loop until zero critical issues remain (or max iterations reached).

Loop Structure

ROUND = 1
MAX_ROUNDS = 3

while ROUND <= MAX_ROUNDS:
    1. Run /review-program --local --full
    2. Read summary → count critical issues
    3. If critical == 0 → EXIT LOOP (success)
    4. If ROUND == MAX_ROUNDS → EXIT LOOP (escalate to user)
    5. If ROUND == 2 → ask user before attempting round 3
    6. Fix critical issues
    7. Run make format + tests
    8. Commit + push fixes (so next round's gh pr diff sees them)
    9. ROUND += 1

Why commit + push is required between rounds

/review-program reads the PR code via gh pr diff $PR_NUMBER, which fetches the diff from the GitHub remote API. Local-only commits are invisible to gh pr diff. Step 5C pushes the initial implementation, and each fix round must also commit AND push so the next review round sees the updated code.

Step 5C push   → implementation commits on remote (commit A)
Round 1 review → gh pr diff sees commit A → reviews implementation
Round 1 fix    → commit B + push (fixes from round 1)
Round 2 review → gh pr diff now includes commit B → reviews the fixed code
Round 2 fix    → commit C + push (fixes from round 2, if any)
Round 3 review → gh pr diff includes commits B+C → final check
Phase 7        → final push (changelog, any remaining changes)

Step 6A: Run /review-program --local --full (Round N)

Invoke the review-program skill in local-only mode with --full. On round 1, this runs the full review:

• PDF acquisition (always on): complete:country-models:document-collector discovers and renders source PDFs
• Regulatory accuracy: complete:country-models:program-reviewer researches regulations independently, compares to code
• Reference quality: complete:reference-validator checks reference completeness and corroboration
• Code patterns: complete:country-models:implementation-validator checks code patterns
• Test coverage: complete:country-models:edge-case-generator identifies untested scenarios
• PDF audit: 2-5 general-purpose agents audit parameter values against PDF screenshots
• Mismatch verification: 600 DPI re-render + text cross-reference for every reported mismatch

Note on round 2+: The /review-program command always runs a full review — it has no "incremental" mode. This is by design: fixes can introduce new issues, and PDF audit agents need to re-verify values that may have changed. The cost of a redundant re-check is low compared to missing a regression.

Step 6B: Check Results

Read /tmp/{PREFIX}-review-summary.md (max 20 lines). Check:

• Critical issue count — the number that matters
• Recommended severity — APPROVE means zero critical issues

If critical == 0: Report to user and exit loop.

If critical > 0 and ROUND < MAX_ROUNDS: Proceed to Step 6C.

If critical > 0 and ROUND == 2: Use AskUserQuestion before round 3:

Question: "Review found {N} critical issues after 2 fix rounds. Attempt a 3rd round?"
Options:
  - "Yes, try one more round"
  - "No, stop and show remaining issues"

If user says no, exit loop and include remaining issues in the final report.

If critical > 0 and ROUND == MAX_ROUNDS (3): Exit loop. Report remaining issues to user:

"After {MAX_ROUNDS} review-fix rounds, {N} critical issues remain:
{one-line summary of each from the summary file}
These will be noted in the final report for manual resolution."

Step 6C: Fix Critical Issues

Spawn a fixer agent to address the critical issues found in this round:

subagent_type: "complete:country-models:rules-engineer",
  team_name: "{st}-{prog}-backdate", name: "review-fixer-{ROUND}"

"Fix the critical issues from the /review-program review (round {ROUND}).
Read the full review report at /tmp/{PREFIX}-review-full-report.md.
Focus ONLY on items marked CRITICAL — do not change anything else.
Load skills: /policyengine-variable-patterns, /policyengine-code-style,
  /policyengine-parameter-patterns, /policyengine-period-patterns, /policyengine-vectorization.
Apply fixes. Run make format.

REUSE EXISTING VARIABLES: Before creating any non-program-specific variable, Grep the
codebase first. PolicyEngine-US likely already has it (fpg, smi, tanf_fpg, ssi, etc.).

LEARN FROM PAST SESSIONS (read if they exist — skip if not found):
- {LESSONS_PATH}
- ~/.claude/plugins/marketplaces/policyengine-claude/lessons/agent-lessons.md
These contain real mistakes from past runs. Do NOT repeat them.

LEARN FROM PREVIOUS ROUNDS:
If /tmp/{st}-{prog}-checklist.md exists, read it FIRST. It contains issues
found and fixed in previous rounds. Do NOT reintroduce any of those patterns.

AFTER fixing, APPEND your fixes to /tmp/{st}-{prog}-checklist.md:
Format each line as:
- [ROUND {ROUND}] [{CATEGORY}] {file}:{line} — {what was wrong} → {what you changed}

Categories: HARD-CODED, WRONG-PERIOD, MISSING-REF, BAD-REF, DEDUCTION-ORDER,
UNUSED-PARAM, WRONG-ENTITY, NAMING, FORMULA-LOGIC, TEST-GAP, OTHER"

Step 6D: Verify Fix & Commit

6D-1: Run tests and fix failures:

subagent_type: "complete:country-models:ci-fixer",
  team_name: "{st}-{prog}-backdate", name: "ci-fixer-{ROUND}"

"Run tests for {STATE} {PROGRAM} after review-fix round {ROUND}.
Fix any test failures introduced by the fixes. Run make format."

6D-2: Commit and push fixes:

After ci-fixer completes, Main Claude commits and pushes so the next round's /review-program (which uses gh pr diff from the remote) sees the updated code:

# Stage only the program's directories — avoid staging unintended files
git add policyengine_us/parameters/gov/states/{st}/ policyengine_us/variables/gov/states/{st}/ policyengine_us/tests/policy/baseline/gov/states/{st}/
git commit -m "Review-fix round {ROUND}: address critical issues from /review-program"
git push

6D-3: Increment ROUND and go back to Step 6A.

Loop Summary

Round	What happens	Exit condition
1	Full /review-program → fix criticals → run tests	0 critical issues
2	Full /review-program → fix criticals → run tests	0 critical issues, or user declines round 3
3	Full /review-program → report remaining issues	Always exits (max reached)

Typical outcome: Most issues are caught and fixed in round 1. Round 2 catches regressions from round 1 fixes. Round 3 is rare — it's a safety net for complex programs with cascading dependencies.

---

Phase 7: Finalize

Step 7A: Push & Changelog

subagent_type: "complete:country-models:pr-pusher",
  team_name: "{st}-{prog}-backdate", name: "pusher"

The pr-pusher agent ensures PRs are properly formatted with changelog, linting, and tests before pushing. It handles:

• Creating changelog fragment in changelog.d/ (see Changelog section below)
• Running make format
• Pushing the branch

Changelog format (towncrier fragments):

echo "Description of change." > changelog.d/<branch-name>.<type>.md

Types: added (minor bump), changed (patch), fixed (patch), removed (minor), breaking (major). DO NOT edit CHANGELOG.md directly or use changelog_entry.yaml (deprecated).

Step 7B: Final Report + PR Description (DELEGATED)

Spawn a general-purpose agent to write the final report AND the PR description:

subagent_type: "general-purpose",
  team_name: "{st}-{prog}-backdate", name: "reporter"

"Finalize {STATE} {PROGRAM} backdating report.
1. Read all findings from task list
2. Read the last /review-program summary at /tmp/{PREFIX}-review-summary.md
3. Read the impl spec summary at /tmp/{st}-{prog}-impl-summary.md
4. Write SHORT final report (max 25 lines) to /tmp/{st}-{prog}-final-report.md:
   - Total parameters verified, date entries added
   - Reference fixes applied, formula improvements made
   - Review-fix loop rounds completed, remaining issues (if any)
   - Issue #{ISSUE_NUMBER}, PR #{PR_NUMBER}
5. Write FULL detailed report to /tmp/{st}-{prog}-full-audit.md (archival)
6. Write PR description to /tmp/{st}-{prog}-pr-description.md using this format:

   ## Summary
   Backdates {STATE_FULL} {PROGRAM} parameters to {TARGET_YEAR} and improves code quality.
   Closes #{ISSUE_NUMBER}

   ## Changes
   - **Parameters backdated**: {count} files, {count} date entries added
   - **Reference fixes**: {count} (broken URLs, generic statutes, page corrections)
   - **Formula improvements**: {list if any}
   - **Tests added**: {count} new test cases

   ## Regulatory Sources
   - [Source 1 title](URL#page=XX)
   - [Source 2 title](URL#page=XX)

   ## Review Summary
   - Review-fix loop: {N} rounds, {0/N} critical issues remaining
   - {X} parameters verified against PDF, {Y} confirmed correct

   ## Needs Human Decision
   {Include this section ONLY if there are unresolved items. Omit entirely if none.}
   - [ ] {Unresolved critical issue from review-fix loop, with context}
   - [ ] {Source conflict: two PDFs disagree on value X — which is correct?}
   - [ ] {Missing source: no PDF found for date range YYYY-YYYY}
   - [ ] {Formula ambiguity: regulation is unclear about [specific rule]}
   - [ ] {Tier C change not implemented: [description] — needs user approval}

   ## Test Plan
   - [ ] All existing tests pass
   - [ ] New historical tests pass
   - [ ] Edge case tests pass
   - [ ] Microsimulation check (if applicable)"

Step 7C: Update PR Description

After the reporter completes, Main Claude updates the PR description using --body-file (no need to read the file into context):

gh pr edit $PR_NUMBER --body-file /tmp/{st}-{prog}-pr-description.md

Step 7D: Present Summary

Read ONLY /tmp/{st}-{prog}-final-report.md. Present to user:

• Total parameters verified
• Date entries added
• Reference fixes applied
• Formula improvements made
• Remaining issues (if any)

---

Phase 8: Lessons Learned

After the workflow completes, distill session lessons into persistent storage and propose them to the plugin repo. This phase runs even if the review-fix loop was skipped — the implementation and validation phases may also have produced lessons.

Step 8A: Extract Lessons (DELEGATED)

Spawn a general-purpose agent to distill session-specific fixes into generalized rules:

subagent_type: "general-purpose",
  team_name: "{st}-{prog}-backdate", name: "lesson-extractor"

"Distill lessons learned from the {STATE} {PROGRAM} backdating session.

READ these files:
- /tmp/{st}-{prog}-checklist.md (session checklist from review-fix loop, if exists)
- /tmp/{st}-{prog}-checkpoint.md (validation checkpoint, if exists)
- /tmp/{PREFIX}-review-summary.md (last review summary, if exists)

ALSO READ the persistent lessons file (if it exists):
- {persistent_lessons_path}

TASK:
1. Extract every issue that was found and fixed during this session
2. Generalize each fix into a one-line rule (remove file names, line numbers, state names)
3. Categorize each rule:
   - PARAMETER: structure, metadata, references, dates, descriptions
   - VARIABLE: hard-coding, periods, entities, formulas, branching
   - TEST: coverage, boundaries, periods, naming
   - REFERENCE: URLs, page numbers, specificity, liveness
   - FORMULA: deduction order, unused params, zero-sentinels, logic
4. Deduplicate against existing persistent lessons — only keep genuinely NEW rules
5. If no new lessons: write 'NO NEW LESSONS' to /tmp/{st}-{prog}-new-lessons.md
6. If new lessons exist, write to /tmp/{st}-{prog}-new-lessons.md:

   ## New Lessons from {STATE} {PROGRAM} ({date})

   ### PARAMETER
   - {generalized rule}

   ### VARIABLE
   - {generalized rule}

   ### TEST
   - {generalized rule}

   (Only include categories that have new lessons. Max 15 entries total.)

RULES FOR GENERALIZATION:
- Remove state names: 'ct_tfa.py hard-coded 0.75' → 'Never hard-code numeric values in formulas'
- Remove file paths: 'payment/amount.yaml missing #page=' → 'All PDF references must include #page=XX'
- Keep the principle: 'Used period instead of period.this_year' → 'Use period.this_year for annual variables like household size'
- Be specific enough to be actionable, general enough to apply across programs"

Where {persistent_lessons_path} is {LESSONS_PATH} (resolved in Phase 0A — same directory as MEMORY.md, persists across conversations).

Step 8B: Persist Locally

After the lesson-extractor completes, read /tmp/{st}-{prog}-new-lessons.md.

If 'NO NEW LESSONS': Skip to Step 8D.

If new lessons exist: Append them to the persistent local file:

# Create the file if it doesn't exist
LESSONS_FILE="$LESSONS_PATH"
if [ ! -f "$LESSONS_FILE" ]; then
    echo "# Agent Lessons Learned" > "$LESSONS_FILE"
    echo "" >> "$LESSONS_FILE"
    echo "Accumulated from /backdate-program runs. Loaded by implementation agents on future runs." >> "$LESSONS_FILE"
    echo "Max 50 entries — oldest get pruned when exceeded." >> "$LESSONS_FILE"
    echo "" >> "$LESSONS_FILE"
fi
cat /tmp/{st}-{prog}-new-lessons.md >> "$LESSONS_FILE"

Pruning: If the file exceeds 50 lesson entries (grep -c "^- " "$LESSONS_FILE"), remove the oldest entries (earliest section) to stay under the cap.

Step 8C: Propose to Plugin Repo (PR)

Share lessons with all plugin users by proposing them to the policyengine-claude repo.

This uses a temporary clone to avoid assumptions about how the plugin is installed (marketplace download, git clone, etc.) and to avoid modifying the user's working directory.

Step 8C-1: Clone and check for existing open lessons PR:

WORK_DIR=/tmp/{st}-{prog}-lessons-pr
rm -rf "$WORK_DIR"
gh repo clone PolicyEngine/policyengine-claude "$WORK_DIR" -- --depth=1
cd "$WORK_DIR"

# Check for an open lessons PR
OPEN_PR=$(gh pr list --repo PolicyEngine/policyengine-claude \
  --search "Agent lessons" --state open --json number,headRefName \
  --jq '.[0]')

If clone fails (no gh auth, network issues): Skip Step 8C entirely. Lessons are already saved locally in Step 8B. Report: "Lessons saved locally. Plugin PR skipped (could not clone repo)."

Step 8C-2: Create or update the lessons file:

if [ -n "$OPEN_PR" ]; then
    # Existing open PR — checkout its branch and append
    BRANCH=$(echo "$OPEN_PR" | jq -r '.headRefName')
    git fetch origin "$BRANCH"
    git checkout "$BRANCH"
else
    # No open PR — create a new branch
    BRANCH="lessons/update-$(date +%Y%m%d)-{st}-{prog}"
    git checkout -b "$BRANCH"
fi

mkdir -p lessons
LESSONS_PLUGIN="$WORK_DIR/lessons/agent-lessons.md"
if [ ! -f "$LESSONS_PLUGIN" ]; then
    echo "# Agent Lessons Learned" > "$LESSONS_PLUGIN"
    echo "" >> "$LESSONS_PLUGIN"
    echo "Accumulated from /backdate-program runs across all contributors." >> "$LESSONS_PLUGIN"
    echo "Loaded by implementation agents on future runs." >> "$LESSONS_PLUGIN"
    echo "" >> "$LESSONS_PLUGIN"
fi

# Append new lessons (the file was already deduplicated in Step 8A)
cat /tmp/{st}-{prog}-new-lessons.md >> "$LESSONS_PLUGIN"

Step 8C-3: Commit and push:

git add lessons/agent-lessons.md
git commit -m "Add lessons from {STATE} {PROGRAM} backdate session"
git push -u origin "$BRANCH"

If push fails (no write access): Try fork-based workflow:

gh repo fork PolicyEngine/policyengine-claude --clone=false
git remote add fork "$(gh repo view --json sshUrl --jq '.sshUrl' -- "$(gh api user --jq '.login')/policyengine-claude")"
git push -u fork "$BRANCH"

If fork also fails, skip PR creation. Lessons are already saved locally.

Step 8C-4: Create PR if none exists:

if [ -z "$OPEN_PR" ]; then
    gh pr create \
      --repo PolicyEngine/policyengine-claude \
      --title "Agent lessons update" \
      --body "$(cat <<'EOF'
## Summary
Accumulated lessons learned from /backdate-program runs.

These are generalized rules distilled from real agent mistakes caught
during review-fix loops. Each entry has been verified (the issue was
real and the fix was confirmed).

## How to review
- Check that each rule is genuinely useful and not too specific
- Promote particularly good rules to skill files if warranted
- Remove any that are too obvious or already covered by skills

🤖 Generated with [Claude Code](https://claude.com/claude-code)
EOF
)"
fi

Step 8C-5: Clean up temporary clone:

rm -rf "$WORK_DIR"

Step 8D: Shutdown Team & Report

TeamDelete()

Present to user:

• WORKFLOW COMPLETE
• New lessons learned: {count} (or "none — all patterns already known")
• Lessons PR: {link to open PR on policyengine-claude, if created/updated}

---

Future Runs: Loading Lessons

On future /backdate-program runs, the LEARN FROM PAST SESSIONS block is already embedded in these agent prompts:

Phase	Agent	Has Lessons Block
2	ref-auditor (reference-validator)	Yes
3	impl-parameters (rules-engineer)	Yes
3	impl-formulas (rules-engineer)	Yes
4A	test-creator	Yes
4B	edge-case-gen	Yes
6C	review-fixer (rules-engineer)	Yes

All use the same pattern:

LEARN FROM PAST SESSIONS (read if they exist — skip if not found):
- {LESSONS_PATH}
- ~/.claude/plugins/marketplaces/policyengine-claude/lessons/agent-lessons.md
These contain real mistakes from past runs. Do NOT repeat them.

Prevention is better than fixing — lessons are loaded by all agents that write or validate code/tests/references.

---

Agent Summary

Phase	Agent	Plugin Type	Why This Agent
0B	issue-manager	complete:country-models:issue-manager	Finds/creates tracking issue + draft PR
0E	discovery	complete:country-models:document-collector	Purpose-built for finding regulatory sources
0E	secondary-validator	general-purpose	Custom WRDTP/CBPP web research
0E	prep-1, prep-2	general-purpose	Slim: Bash for curl/pdftoppm/pdfinfo only — no page mapping
0E	research-{N}-{a,b,...} (1-5 per PDF)	general-purpose	Self-map sections + Read PNG screenshots + YAML cross-ref
1	consolidator	general-purpose	Custom merge logic across all findings
2	ref-auditor	complete:reference-validator	Purpose-built for reference validation
2	formula-reviewer	complete:country-models:program-reviewer	Purpose-built for regulation-vs-code comparison
3	impl-parameters	complete:country-models:rules-engineer	Purpose-built for parameter YAML design
3	impl-formulas	complete:country-models:rules-engineer	Purpose-built for formula implementation
4	test-creator	complete:country-models:test-creator	Purpose-built for integration tests
4	edge-case-gen	complete:country-models:edge-case-generator	Purpose-built for boundary condition tests
5A	validator	complete:country-models:implementation-validator	Purpose-built for code pattern checks
5B	ci-fixer	complete:country-models:ci-fixer	Purpose-built for test fix iteration
6	review-program x1-3	(invokes /review-program skill)	Review-fix loop: runs until 0 critical issues or max 3 rounds
6	review-fixer-{N} x1-3	complete:country-models:rules-engineer	Fix critical issues from each review round
6	ci-fixer-{N} x1-3	complete:country-models:ci-fixer	Verify fixes don't break tests after each round
7A	pusher	complete:country-models:pr-pusher	Purpose-built for changelog + format + push
7B	reporter	general-purpose	Final report + PR description with unresolved items
8A	lesson-extractor	general-purpose	Distills session fixes into generalized rules

11 plugin agents + 1 skill invoked + 7 general-purpose agents (only where no plugin agent fits).

---

Files on Disk (Handoff Mechanism)

File	Written By	Read By	Size
/tmp/{st}-{prog}-inventory.md	inventory (Phase 0)	Agents only	Full
/tmp/{st}-{prog}-inventory-summary.md	inventory (Phase 0)	Main Claude	Short (≤10 lines)
sources/working_references.md	document-collector (Phase 0E)	Consolidator	Full
/tmp/{st}-{prog}-impl-spec.md	Consolidator (Phase 1)	Impl agents, test agents	Full
/tmp/{st}-{prog}-impl-summary.md	Consolidator (Phase 1)	Main Claude	Short
/tmp/{st}-{prog}-ref-audit.md	reference-validator (Phase 2)	rules-engineer	Full
/tmp/{st}-{prog}-formula-audit.md	program-reviewer (Phase 2)	rules-engineer	Full
/tmp/{st}-{prog}-phase2-summary.md	program-reviewer (Phase 2)	Main Claude	Short
/tmp/{st}-{prog}-checkpoint.md	quick-auditor (Phase 5)	Main Claude	Short
/tmp/{st}-{prog}-final-report.md	Reporter (Phase 7)	Main Claude	Short
/tmp/{st}-{prog}-pr-description.md	Reporter (Phase 7)	gh pr edit --body-file	Full
/tmp/{st}-{prog}-full-audit.md	Reporter (Phase 7)	Archival only	Full
/tmp/{st}-{prog}-checklist.md	review-fixer (Phase 6)	Fix agents (next round), lesson-extractor	Full
/tmp/{st}-{prog}-new-lessons.md	lesson-extractor (Phase 8)	Main Claude (read first line only)	Short
~/.claude/projects/.../memory/agent-lessons.md	Phase 8B	Phase 2/3/4/6 agents (future runs)	Short (≤50 entries)
policyengine-claude/lessons/agent-lessons.md	Phase 8C (PR)	All plugin users (future runs)	Short (≤50 entries)

Main Claude reads ONLY "Short" files. Never read "Full" files.

---

Error Handling

Category	Example	Action
Recoverable	Test failure, lint error	ci-fixer handles automatically
Source gap	No PDFs found for a date range	Flag to user, continue with available data
Agent failure	Agent times out or crashes	Report to user, suggest re-running that phase
Blocking	No historical sources exist at all	Stop and report to user

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Anti-Patterns This Workflow Prevents

1. Wrong effective dates from era conflation: Research agents check for predecessor program values
2. Broken reference URLs: reference-validator validates all hrefs
3. Generic statute references: reference-validator checks subsection specificity
4. Zero-sentinel anti-patterns: program-reviewer flags rate: 0 → rules-engineer creates in_effect boolean
5. Unused parameters: program-reviewer catches params not wired into formulas
6. Hardcoded comments: program-reviewer flags specific numbers in comments
7. Duplicate date entries: Consolidator flags same value at multiple dates
8. Session law URLs: reference-validator migrates to permanent statute URLs
9. Untested existing features: test-creator inventories ALL params for coverage
10. Missing transition boundary tests: test-creator adds tests after every value-change date
11. Instruction page vs PDF page: reference-validator distinguishes file page from printed page