readme: state current status and unblock agent workflow

Roadmap now reflects reality: config done, db tests red awaiting
implementation (with the 'do not alter test intent' guard), and the
epsilon-parser branch open-but-empty pending the step-2 spec.

Guidelines adjusted so an agent can work a feature branch
unattended: fixtures are the explicit exception to the data/ commit
ban, and per-passing-test commits need no feedback on a branch —
main still does.

readme.md

@@ -280,22 +280,35 @@ Use a test-driven-development inspired approach, specifically the following work
 - Do not
     - commit secrets or private data
     - commit config files (except for template)
-    - commit anything under data/
+    - commit anything under data/ **except** `data/fixtures/`, which holds
+      sanitized sample data that is committed deliberately
+      (see §Data formats); run `scripts/check_fixture_leaks.py` (exit 0)
+      before ever touching fixtures
     - add dependencies without asking
     - refactor existing code as part of an unrelated task
     - put secrets or real customer data in tests
 - Git commit messages
-    - Follow best practices regarding format and context, but also keep in mind the commit messages are the main code documentation
-    - Always ask for feedback before actually committing
+    - Follow best practices regarding format and context, but also keep in mind
+      the commit messages are the main code documentation
+    - Always ask for feedback before actually committing to `main`; on a
+      feature branch, commit per passing test as part of the workflow without
+      waiting for feedback
     - Be concise
 
 ## Roadmap and status of functionality
 ### Active
-nothing yet…
+* core/config — done (loading, resolution, defaults, masking, validation;
+  tests green, commit 9452962)
 ### In development
+* core/db — tests committed and RED (connection URL, migration splitting,
+  embedded schema v1, backup/restore; commit 676e55e). Next step: minimal
+  implementation until green; do not alter the tests' intent.
 * cli
     * command structure specified in Documentation/cli.md
     * ingest tab-separated .txt files containing transactions from automated gas station into a MariaDB
+        * feature branch feature/epsilon-parser is open but empty: no
+          spec/checklist yet (workflow step 2 pending); sanitized
+          fixtures are ready (data/fixtures/epsilon)
     * create invoices from data in database
 ### Future / planned
 * cli