Tracks the cog_pipeline corpus bump from 2 → 3 (year=2012 partition is
now modern-only; v2 shipped a broken mixed-source partition). session
open aborts with a clear message if a reader hits a legacy v2 corpus.
Adds R/sysdata.rda with the annual-average CPIAUCSL index (1947-2026,
80 years, sourced from FRED) and an internal .inflate() helper that
converts nominal amounts between two years via the ratio of CPI values.
Bundling CPI in the package (rather than publishing a cpi_annual.parquet
in the corpus) matches the reader-specification intent: real-dollar
conversion is a verb-level option, not a corpus-level artifact, so the
target_year stays flexible at query time.
data-raw/cpi_annual.R carries the one-shot FRED refresh used to build
sysdata.rda. Re-run when the CPI series needs to roll forward.
Verified: CPI(2000)/CPI(2021) ≈ 0.635, matching the ~0.63 sanity
anchor in cog_explorer's existing inflation logic.
Tests: tests/testthat/test-adjust.R covers the known 2000→2021 ≈ 1.574x
anchor, vectorized from_year, error cases for out-of-range years, and
NA-amount preservation. 14 pass / 0 fail.
Seven DuckDB views register on session open: long (raw), spending_long
and revenue_long (prefix-filtered, NOT is_aggregate per reader-spec §4),
canonical_fips_xwalk and summary_categories (identity), spending_annotated
and revenue_annotated (LEFT JOIN xwalk + categories for verb composition).
File prefix `NN-` enforces creation order so *_annotated views resolve
their *_long dependencies.
Deviation from plan: series_breaks/cpi_annual/legacy_aggregate_map and
*_with_transforms views are deferred — their backing parquets are not
in the v0.1 corpus (manifest.files.metadata only lists canonical_fips_xwalk
and summary_categories). The verbs will compute CPI adjustment verb-side
against a bundled cpi table in a later task.
jared