feat: gadfly-reports — findings store + scoreboard daemon

SQLite-backed HTTP store for Gadfly review findings, per-review run timings, and human/Claude grades, with a points-free per-model scoreboard. Pure fact store: it computes no points or rankings (the dashboard maps severity->points client-side and retunes without re-scoring). Findings are content-addressed by location so cross-model reports collapse for consensus; one grade per finding, latest wins. Pure-Go SQLite (CGO-free) + Docker image CI + tests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -1,27 +1,9 @@
-# ---> Go
-# If you prefer the allow list template instead of the deny list, see community template:
-# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
-#
-# Binaries for programs and plugins
-*.exe
-*.exe~
-*.dll
-*.so
-*.dylib
-
-# Test binary, built with `go test -c`
-*.test
-
-# Output of the go coverage tool, specifically when used with LiteIDE
-*.out
-
-# Dependency directories (remove the comment below to include it)
-# vendor/
-
-# Go workspace file
-go.work
-go.work.sum
-
-# env file
+# build output
+/gadfly-reports
+# local SQLite databases
+*.db
+*.db-wal
+*.db-shm
+/data/
+# local env
 .env
-