Rename OH TANF to OH OWF and add initial eligibility test

**Major Refactoring:**
- Rename all folders, files, variables, and tests from TANF to OWF (Ohio Works First)
- Update all parameter paths: .tanf. → .owf.
- Update all labels: "Ohio TANF" → "Ohio OWF"

**Parameter Improvements (per plugin rules):**
- Split earned_income_disregard.yaml into separate files:
  - income/deductions/earned_income_disregard/flat_amount.yaml ($250)
  - income/deductions/earned_income_disregard/percent_of_remainder.yaml (0.5)
- Add metadata (unit, period, label) to ALL parameters
- Delete max_size_in_table.yaml (hard-code 8 in formula)
- Delete minimum_benefit.yaml (simplified implementation)

**New Feature - Initial Eligibility Test:**
- Created oh_owf_initial_income_eligible.py variable
- Created initial_eligibility/income_limit_percent.yaml (0.5 = 50% FPL)
- Uses tanf_fpg to check gross income < 50% of current year FPL
- Updated oh_owf_income_eligible.py to apply both tests:
  - New applicants: initial (50% FPL) AND ongoing (countable < payment std)
  - Enrolled recipients: only ongoing test

**Bug Fixes:**
- Fixed federal TANF parameter typo: employment_income_before_lrs → employment_income_before_lsr
- Updated all tests to use employment_income_before_lsr
- Added is_tanf_enrolled to all tests (true for enrolled, false for new applicants)

**Test Updates:**
- Added 2 new test cases for new applicants (is_tanf_enrolled: false)
- Updated 1 test expectation (removed minimum benefit threshold)
- All tests use proper inline YAML format: members: [parent, child]

**Results:**
- All 65 tests passing (63 original + 2 new)
- Zero hard-coded values (except max table size = 8)
- Complete metadata on all parameters
- Proper federal/state separation

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

Co-Authored-By: Claude <[email protected]>

Author: hua7450

changelog_entry.yaml

@@ -1,4 +1,4 @@
 - bump: minor
   changes:
     added:
-    - Ohio Works First (TANF) program implementation with income eligibility rules and benefit calculations
+    - Ohio Works First (OWF) cash assistance program

policyengine_us/parameters/gov/hhs/tanf/cash/income/sources/earned.yaml

@@ -1,8 +1,8 @@
 description: The Department of Health and Human Services counts these income sources as earned income under the Temporary Assistance for Needy Families program.
 values:
   2020-01-01:
-    - employment_income_before_lrs
-    - self_employment_income_before_lrs
+    - employment_income_before_lsr
+    - self_employment_income_before_lsr
 metadata:
   unit: list
   period: year

policyengine_us/parameters/gov/states/oh/odjfs/owf/income/deductions/earned_income_disregard/flat_amount.yaml

@@ -0,0 +1,11 @@
+description: Ohio disregards this flat dollar amount from gross earned income before applying the percentage disregard when calculating countable earned income for Ohio Works First.
+metadata:
+  unit: currency-USD
+  period: month
+  label: Ohio Works First earned income flat disregard
+  reference:
+    - title: Ohio Revised Code § 5107.10(D)(3) - Two hundred-fifty dollar disregard
+      href: https://codes.ohio.gov/ohio-revised-code/section-5107.10
+
+values:
+  1997-07-01: 250

policyengine_us/parameters/gov/states/oh/odjfs/owf/income/deductions/earned_income_disregard/percent_of_remainder.yaml

@@ -0,0 +1,11 @@
+description: Ohio disregards this percentage of remaining earned income after the flat amount deduction when calculating countable earned income for Ohio Works First.
+metadata:
+  unit: /1
+  period: month
+  label: Ohio Works First earned income percentage disregard
+  reference:
+    - title: Ohio Revised Code § 5107.10(D)(3) - One-half of remainder disregard
+      href: https://codes.ohio.gov/ohio-revised-code/section-5107.10
+
+values:
+  1997-07-01: 0.5

policyengine_us/parameters/gov/states/oh/odjfs/owf/initial_eligibility/income_limit_percent.yaml

@@ -0,0 +1,14 @@
+description: Ohio uses this percentage of the current federal poverty guideline as the gross income limit for initial Ohio Works First eligibility determination.
+metadata:
+  unit: /1
+  period: year
+  label: Ohio Works First initial eligibility income limit percentage
+  reference:
+    - title: Ohio Revised Code § 5107.10(D) - Gross income cannot exceed 50% of federal poverty guidelines
+      href: https://codes.ohio.gov/ohio-revised-code/section-5107.10
+    - title: ODJFS OWF Payment Standards Table - Initial Eligibility Test column
+      href: https://dam.assets.ohio.gov/image/upload/jfs.ohio.gov/ofam/OWFPaymentStandards.pdf
+  note: Despite statute referencing July 1 1997 FPL, Ohio uses current year FPL in practice
+
+values:
+  1997-07-01: 0.5

policyengine_us/parameters/gov/states/oh/odjfs/tanf/payment_standard/additional_person_increment.yaml renamed to policyengine_us/parameters/gov/states/oh/odjfs/owf/payment_standard/additional_person_increment.yaml

@@ -2,6 +2,7 @@ description: Additional monthly payment standard amount for each person in Ohio
 metadata:
   unit: currency-USD
   period: month
+  label: Ohio Works First additional person increment
   reference:
     - title: Ohio Administrative Code 5101:1-23-40 - Payments
       href: http://codes.ohio.gov/oac/5101:1-23-40

policyengine_us/parameters/gov/states/oh/odjfs/tanf/payment_standard/amounts.yaml renamed to policyengine_us/parameters/gov/states/oh/odjfs/owf/payment_standard/amounts.yaml

@@ -2,6 +2,7 @@ description: Monthly payment standard amounts for Ohio Works First assistance gr
 metadata:
   unit: currency-USD
   period: month
+  label: Ohio Works First payment standard amounts
   reference:
     - title: Muskingum County Job & Family Services - Ohio Works First Cash Assistance
       href: https://www.muskingumcountyjfs.com/Human-Services/Ohio-Works-First-Cash-Assistance/