Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Domain is now symmetric around 0
- Uses round number intervals (50, 100, or 150)
- Ticks are consistent across all years

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Domain is now symmetric around 0
- Uses round intervals for both absolute (£10/20/50) and relative (0.5/1/2%)
- Ticks are consistent across all deciles

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Calculate domain across all years in Dashboard.jsx
- Pass fixedYAxisDomain prop to DecileChart
- Axis no longer shifts when changing years

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Unified domain and tick calculation for consistency
- Ticks always include 0 and use same interval as domain
- Symmetric around 0 with round number increments

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Basic rate +7.4% → Basic rate threshold uplift
- Intermediate rate +7.4% → Intermediate rate threshold uplift
- Added missing freeze policy labels

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Calculate min/max values across all years in LocalAreaSection
- Pass fixedColorExtent to ScotlandMap
- Colors no longer shift when changing years

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Changed BBC link to official Scottish Budget document:
https://www.gov.scot/publications/scottish-budget-2026-2027/pages/5/

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Specify 2026 market value basis for £1m threshold
- Add SFC link and explain they don't cost Council Tax (local tax)
- Note SFC assessed LBTT behavioral effects as immaterial
- Clarify £18.5m calculation (11,481 properties × £1,607 rate)
- Explain £1,607 rate derivation from UK benchmark rates
- Restructure methodology steps for clarity

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Converted titles to proper sentences
- Added UK benchmark rates: 100% surcharge on £2m+, 50% on £1-2m
- Mentioned Scottish Band H average (~£3,200/year)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- £1,607 = (89% × £1,500) + (11% × £2,500)
- 89%/11% split from Savills 2024 (416 sales £1m-£2m, 50 sales £2m+)
- Link to scotland-mansion-tax repo for source

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- UK HVCTS sets £2,500/year for £2-2.5m properties
- £1,500/year for £1-2m is extrapolated for Scottish band
- Added link to GOV.UK source

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

…tion

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Combined revenue calculation and rate derivation into one point
- Renumbered remaining points (now 4 total)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Added ThresholdChart component using recharts
- Shows baseline (CPI growth) vs reform thresholds by year
- Added charts to basic rate and intermediate rate sections
- Baseline assumes ~2% annual CPI growth from 2025-26

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Added data arrays for higher, advanced, and top rate freezes
- Replaced tables with ThresholdChart for all three freeze policies
- Charts show baseline (CPI growth) vs reform (frozen then CPI)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Fix freeze policy baseline values to use correct CPI from PE UK
- Update baseline to start CPI growth after 2026-27 (per Budget 2025-26)
- Delete tables from threshold uplift policies, keep charts only
- Center threshold charts and increase height to 300px
- Remove "(~2% annually)" and "(CPI growth)" from notes/legends
- Update descriptions with correct baseline values (~£47k, ~£81k, ~£136k)
- Make budget measures section expandable with methodology inside
- Fix various note text for clarity and consistency

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Add main "Income tax and benefits" section header (h2)
- Convert subsection headers to h3 with consistent styling
- Make "PolicyEngine vs SFC comparison" match subsection style
- Make Note and Data notes expandable in SFC comparison table
- Update SECTIONS array for cleaner navigation
- Add visual separator styling (border-top) between subsections

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>