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- contracts/schema/migrations/0002_categories_v2.sql: server migration 0002 rebuilds categories with the 14-key default_key CHECK, inserts housing, insurance, children and fees with server_versions taken from the global sequence, sets schema_version 2. server-v1.sql unchanged. - contracts/category-keywords.csv: the keyword table of the suggestion (148 entries, from docs/ux). - contracts/test-vectors/suggest_category.json: 65 Kotlin-only cases of CS-4 to CS-6. - contracts/examples/E-1-health: schema_version 2. - tools/contracts-check.py: reference suggestCategory, keyword-table checks, 0002 load checks on a fresh and an in-use database, plain icon/color check, new icon and colour tokens. - android/domain: suggestCategory (CS-4 to CS-6, code points, platform NFC and categories through UnicodeText), vector runner for suggest_category, eight vector files. - server/crates/kvitt-domain/tests/vectors.rs: suggest_category is Kotlin-only. The OpenAPI DefaultCategoryKey extension and the two new category examples are held back until the server's wire types know the new keys (M12b). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B