Add elections + demographics layer: candidates and jurisdictions

Two new entity types, built deterministically from the raw exports:

  Candidate (2,494)     — 2026 federal candidates as files under
                          us/states/<st>/candidates/, with office,
                          district, party, incumbent/challenger stance,
                          campaign committee, FEC id.

  Jurisdiction (3,494)  — demographic nodes carrying ACS 2023 data:
                          3,131 counties (deduped from 3,231 mixed-format
                          fips keys) + 363 congressional districts.

This completes the county skeleton nationwide: every US county is now a
browsable node with population, income, poverty, race, education and
housing — even where no officeholders are mapped yet. In Florida the
county index.md merges into the existing dir and reports its officeholder
count alongside demographics (St. Lucie: 33 officeholders + ACS profile).

build.py now reads seven raw inputs in one deterministic pass
(byte-identical on rerun). The mirror now answers: who holds power, who
runs this institution, who is running, and what each place is made of.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

data/jurisdictions/us/states/hi/counties/hawaii/index.md

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+---
+type: Jurisdiction
+title: "Hawaii County, HI"
+classification: county
+fips: "15001"
+state: "HI"
+demographics:
+  population: 205769
+  population_under_18: 42438
+  population_18_64: 114330
+  population_65_plus: 49001
+  median_household_income: 78639
+  poverty_rate: 14.94
+  homeownership_rate: 73.98
+  unemployment_rate: 6.0
+  median_home_value: 519300
+  gini_index: 0.4804
+  vacancy_rate: 18.36
+  race_white: 63553
+  race_black: 1678
+  race_asian: 42748
+  race_native: 921
+  hispanic: 24003
+  bachelors_plus: 65444
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, county, hi]
+timestamp: "2026-07-03"
+---
+
+# Hawaii County, HI
+
+County jurisdiction.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 205769 |
+| Under 18 | 42438 |
+| 18–64 | 114330 |
+| 65+ | 49001 |
+| Median household income | 78639 |
+| Poverty rate | 14.94 |
+| Homeownership rate | 73.98 |
+| Unemployment rate | 6.0 |
+| Median home value | 519300 |
+| Gini index | 0.4804 |
+| Vacancy rate | 18.36 |
+| White | 63553 |
+| Black | 1678 |
+| Asian | 42748 |
+| Native | 921 |
+| Hispanic/Latino | 24003 |
+| Bachelor's or higher | 65444 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/hi/counties/honolulu/index.md

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+---
+type: Jurisdiction
+title: "Honolulu County, HI"
+classification: county
+fips: "15003"
+state: "HI"
+demographics:
+  population: 1001146
+  population_under_18: 206028
+  population_18_64: 599240
+  population_65_plus: 195878
+  median_household_income: 106195
+  poverty_rate: 9.23
+  homeownership_rate: 59.79
+  unemployment_rate: 4.69
+  median_home_value: 897500
+  gini_index: 0.4413
+  vacancy_rate: 9.47
+  race_white: 184255
+  race_black: 23615
+  race_asian: 422143
+  race_native: 2034
+  hispanic: 94340
+  bachelors_plus: 373214
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, county, hi]
+timestamp: "2026-07-03"
+---
+
+# Honolulu County, HI
+
+County jurisdiction.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 1001146 |
+| Under 18 | 206028 |
+| 18–64 | 599240 |
+| 65+ | 195878 |
+| Median household income | 106195 |
+| Poverty rate | 9.23 |
+| Homeownership rate | 59.79 |
+| Unemployment rate | 4.69 |
+| Median home value | 897500 |
+| Gini index | 0.4413 |
+| Vacancy rate | 9.47 |
+| White | 184255 |
+| Black | 23615 |
+| Asian | 422143 |
+| Native | 2034 |
+| Hispanic/Latino | 94340 |
+| Bachelor's or higher | 373214 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/hi/counties/kalawao/index.md

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+---
+type: Jurisdiction
+title: "Kalawao County, HI"
+classification: county
+fips: "15005"
+state: "HI"
+demographics:
+  population: 67
+  population_65_plus: 14
+  median_household_income: 73750
+  poverty_rate: 22.73
+  homeownership_rate: 0.0
+  unemployment_rate: 0.0
+  gini_index: 0.2834
+  vacancy_rate: 62.62
+  race_white: 19
+  race_black: 0
+  race_asian: 12
+  race_native: 12
+  hispanic: 9
+  bachelors_plus: 24
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, county, hi]
+timestamp: "2026-07-03"
+---
+
+# Kalawao County, HI
+
+County jurisdiction.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 67 |
+| 65+ | 14 |
+| Median household income | 73750 |
+| Poverty rate | 22.73 |
+| Homeownership rate | 0.0 |
+| Unemployment rate | 0.0 |
+| Gini index | 0.2834 |
+| Vacancy rate | 62.62 |
+| White | 19 |
+| Black | 0 |
+| Asian | 12 |
+| Native | 12 |
+| Hispanic/Latino | 9 |
+| Bachelor's or higher | 24 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/hi/counties/kauai/index.md

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+---
+type: Jurisdiction
+title: "Kauai County, HI"
+classification: county
+fips: "15007"
+state: "HI"
+demographics:
+  population: 73731
+  population_under_18: 15636
+  population_18_64: 41565
+  population_65_plus: 16530
+  median_household_income: 97668
+  poverty_rate: 9.09
+  homeownership_rate: 68.59
+  unemployment_rate: 3.85
+  median_home_value: 873200
+  gini_index: 0.446
+  vacancy_rate: 22.44
+  race_white: 21863
+  race_black: 639
+  race_asian: 22560
+  race_native: 146
+  hispanic: 7804
+  bachelors_plus: 21597
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, county, hi]
+timestamp: "2026-07-03"
+---
+
+# Kauai County, HI
+
+County jurisdiction.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 73731 |
+| Under 18 | 15636 |
+| 18–64 | 41565 |
+| 65+ | 16530 |
+| Median household income | 97668 |
+| Poverty rate | 9.09 |
+| Homeownership rate | 68.59 |
+| Unemployment rate | 3.85 |
+| Median home value | 873200 |
+| Gini index | 0.446 |
+| Vacancy rate | 22.44 |
+| White | 21863 |
+| Black | 639 |
+| Asian | 22560 |
+| Native | 146 |
+| Hispanic/Latino | 7804 |
+| Bachelor's or higher | 21597 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/hi/counties/maui/index.md

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+---
+type: Jurisdiction
+title: "Maui County, HI"
+classification: county
+fips: "15009"
+state: "HI"
+demographics:
+  population: 164522
+  population_under_18: 34507
+  population_18_64: 95886
+  population_65_plus: 34129
+  median_household_income: 97161
+  poverty_rate: 9.17
+  homeownership_rate: 65.61
+  unemployment_rate: 5.49
+  median_home_value: 904700
+  gini_index: 0.4575
+  vacancy_rate: 22.74
+  race_white: 49680
+  race_black: 1388
+  race_asian: 46338
+  race_native: 549
+  hispanic: 17435
+  bachelors_plus: 49219
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, county, hi]
+timestamp: "2026-07-03"
+---
+
+# Maui County, HI
+
+County jurisdiction.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 164522 |
+| Under 18 | 34507 |
+| 18–64 | 95886 |
+| 65+ | 34129 |
+| Median household income | 97161 |
+| Poverty rate | 9.17 |
+| Homeownership rate | 65.61 |
+| Unemployment rate | 5.49 |
+| Median home value | 904700 |
+| Gini index | 0.4575 |
+| Vacancy rate | 22.74 |
+| White | 49680 |
+| Black | 1388 |
+| Asian | 46338 |
+| Native | 549 |
+| Hispanic/Latino | 17435 |
+| Bachelor's or higher | 49219 |
+
+## Source
+
+- demographics: Census ACS 2023