revamp aggregate and use typestruct

.gitignore

@@ -1,3 +1,6 @@
+/.direnv/
+/result
+
 # The directory Mix will write compiled artifacts to.
 /_build/
 
@@ -23,5 +26,67 @@ erl_crash.dump
 /tmp/
 
 # Ignore package tarball (built via "mix hex.build").
-policy_service-*.tar
+plausible-*.tar
 
+# If NPM crashes, it generates a log, let's ignore it too.
+npm-debug.log
+
+# If running Clickhouse through the Makefile, its data is written here
+/.clickhouse_db_vol/
+
+# The directory NPM downloads your dependencies sources to.
+/assets/node_modules/
+/tracker/node_modules/
+
+# Files generated by Playwright when running tracker tests
+/tracker/test-results/
+/tracker/playwright-report/
+/tracker/blob-report/
+/tracker/playwright/.cache/
+
+# Stored hash of source tracker files used in development environment
+# to detect changes in /tracker/src and avoid unnecessary compilation.
+/tracker/compiler/last-hash.txt
+# Temporary file used by analyze-sizes.js
+/tracker/compiler/.analyze-sizes.json
+
+# Tracker npm module files that are generated by the compiler for the NPM package
+/tracker/npm_package/plausible.js*
+/tracker/npm_package/plausible.cjs*
+/tracker/npm_package/plausible.d.cts
+
+# test coverage directory
+/assets/coverage
+
+# Since we are building assets from assets/,
+# we ignore priv/static. You may want to comment
+# this depending on your deployment strategy.
+/priv/static/css
+/priv/static/js
+/priv/version.json
+
+# Files matching config/*.secret.exs pattern contain sensitive
+# data and you should not commit them into version control.
+#
+# Alternatively, you may comment the line below and commit the
+# secrets files as long as you replace their contents by environment
+# variables.
+/config/*.secret.exs
+
+# Ignore Elixir Language Server files
+.elixir_ls
+plausible-report.xml
+
+.idea
+*.iml
+*.log
+*.code-workspace
+.vscode
+
+# Dializer
+/priv/plts/*.plt
+/priv/plts/*.plt.hash
+
+.env
+
+.claude