Fix audit HIGHs/MEDs in build code

- ArchiveIndex: guard rawIndex/rawState with doesFileExist so a fresh
  clone (gitignored data/ JSONs absent) degrades to empty instead of
  crashing — the behavior the module doc already promised (AUDIT §1.2)
- Commonplace: decode YAML via encodeUtf8, not Char8.pack, which
  truncates codepoints above 0x7F (AUDIT §3.2)
- Stats: DayOfWeek is ISO-numbered (Mon=1..Sun=7); dowOf and weekStart
  assumed Mon=0..Sun=6, clipping every Sunday cell outside the heatmap
  viewBox and starting weeks on Sunday (AUDIT §3.1)
- Site: epistemicEntry now honors the proved/proven confidence sentinel
  like Contexts.overallScoreField (AUDIT §2.6)
- Contexts: affiliationField returns noResult instead of an empty list,
  so essays without affiliation no longer render an empty meta row
  (AUDIT §2.7)

Verified: full site build passes; proved page gets score=100 in
epistemic-meta.json; empty .meta-affiliation gone; heatmap rows
y=22..94 all inside the 104-high viewBox.

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

build/ArchiveIndex.hs

@@ -132,6 +132,10 @@ activeUrls = unsafePerformIO $ do
 {-# NOINLINE rawIndex #-}
 rawIndex :: Map Text IdxEntry
 rawIndex = unsafePerformIO $ do
+    exists <- doesFileExist indexPath
+    if not exists
+        then return Map.empty
+        else do
             decoded <- A.eitherDecodeFileStrict' indexPath
             let parsed = either (const Map.empty) id decoded
             return $ Map.filterWithKey
@@ -142,6 +146,10 @@ rawIndex = unsafePerformIO $ do
 {-# NOINLINE rawState #-}
 rawState :: Map Text ArchiveStatus
 rawState = unsafePerformIO $ do
+    exists <- doesFileExist statePath
+    if not exists
+        then return Map.empty
+        else do
             decoded <- A.eitherDecodeFileStrict' statePath
             return $ either (const Map.empty) (Map.map seStatus) decoded
 

build/Commonplace.hs

@@ -9,7 +9,8 @@ module Commonplace
 import Data.Aeson    (FromJSON (..), withObject, (.:), (.:?), (.!=))
 import Data.List     (nub, sortBy)
 import Data.Ord      (comparing, Down (..))
-import qualified Data.ByteString.Char8 as BS
+import qualified Data.Text             as T
+import qualified Data.Text.Encoding    as TE
 import qualified Data.Yaml             as Y
 import Hakyll hiding (escapeHtml, renderTags)
 import Contexts (siteCtx)
@@ -140,7 +141,10 @@ loadCommonplace :: Compiler [CPEntry]
 loadCommonplace = do
     rawItem <- load (fromFilePath "data/commonplace.yaml") :: Compiler (Item String)
     let raw = itemBody rawItem
-    case Y.decodeEither' (BS.pack raw) of
+    -- encodeUtf8, not Char8.pack: Char8 truncates each Char to 8 bits,
+    -- silently corrupting any codepoint above 0x7F (same hazard Now.hs
+    -- documents — em-dash 0x2014 would become control char 0x14).
+    case Y.decodeEither' (TE.encodeUtf8 (T.pack raw)) of
         Left  err     -> fail ("commonplace.yaml: " ++ show err)
         Right entries -> return entries
 

build/Contexts.hs

@@ -22,6 +22,7 @@ module Contexts
     , recentFirstByDisplay
     , Revision (..)
     , getRevisions
+    , isProvedConfidence
     ) where
 
 import Data.Aeson              (Value (..))
@@ -86,7 +87,12 @@ affiliationField = listFieldWith "affiliation-links" ctx $ \item -> do
     let entries = case lookupStringList "affiliation" meta of
                     Just xs -> xs
                     Nothing -> maybe [] (:[]) (lookupString "affiliation" meta)
-    return $ map (Item (fromFilePath "") . parseEntry) entries
+    -- noResult, not an empty list: Hakyll's $if$ treats an empty
+    -- ListField as truthy, so returning [] would render the wrapper
+    -- markup (an empty .meta-affiliation row) on every page.
+    if null entries
+        then noResult "no affiliation"
+        else return $ map (Item (fromFilePath "") . parseEntry) entries
   where
     ctx = field "affiliation-name" (return . fst . itemBody)
        <> field "affiliation-url"  (\i -> let u = snd (itemBody i)

build/Site.hs

@@ -31,7 +31,7 @@ import Commonplace  (commonplaceCtx)
 import Now          (nowCtx)
 import Contexts   (siteCtx, essayCtx, postCtx, pageCtx, poetryCtx, fictionCtx, compositionCtx,
                    contentKindField, recentFirstByDisplay,
-                   tagLinksFieldExcludingTopSegment)
+                   tagLinksFieldExcludingTopSegment, isProvedConfidence)
 import qualified Patterns as P
 import Photography (photographyRules)
 import Tags       (buildAllTags, applyTagRules, sidecarIdentifier,
@@ -1011,8 +1011,12 @@ epistemicEntry item = do
                     , grab "stability"    meta
                     ]
                 obj = Map.fromList fields
-                -- Compute overall-score the same way Contexts.overallScoreField does.
+                -- Compute overall-score the same way Contexts.overallScoreField
-                obj' = case ( readMaybe =<< lookupString "confidence" meta :: Maybe Int
+                -- does, including the "proved"/"proven" sentinel -> 100.
+                confRaw = lookupString "confidence" meta
+                confInt | isProvedConfidence confRaw = Just 100
+                        | otherwise = readMaybe =<< confRaw :: Maybe Int
+                obj' = case ( confInt
                             , readMaybe =<< lookupString "evidence"   meta :: Maybe Int
                             ) of
                     (Just conf, Just ev) ->

build/Stats.hs

@@ -181,8 +181,11 @@ parseDay :: String -> Maybe Day
 parseDay = parseTimeM True defaultTimeLocale "%Y-%m-%d"
 
 -- | First Monday on or before 'day' (start of its ISO week).
+--   'fromEnum' on 'DayOfWeek' is ISO-numbered (Monday=1 .. Sunday=7),
+--   so Monday must subtract 0 days, Sunday 6.
 weekStart :: Day -> Day
-weekStart day = addDays (fromIntegral (negate (fromEnum (dayOfWeek day)))) day
+weekStart day =
+    addDays (fromIntegral (negate (fromEnum (dayOfWeek day) - 1))) day
 
 -- | Intensity class for the heatmap (hm0 … hm4).
 heatClass :: Int -> String
@@ -297,7 +300,7 @@ renderHeatmap wordsByDay today =
         nDays    = diffDays today startDay + 1
         allDays  = [addDays i startDay | i <- [0 .. nDays - 1]]
         weekOf d = fromIntegral (diffDays d startDay `div` 7) :: Int
-        dowOf  d = fromEnum (dayOfWeek d)                 -- Mon=0..Sun=6
+        dowOf  d = fromEnum (dayOfWeek d) - 1             -- ISO 1..7 -> Mon=0..Sun=6
         svgW     = (nWeeks - 1) * step + cellSz
         svgH     = 6 * step + cellSz + hdrH