tests: Consolidate and simplify Elixir tests

.beads/last-touched

@@ -1 +1 @@
-el-ffc
+el-fd8

.gitignore

@@ -38,3 +38,8 @@ z_ecto_libsql_test*
 
 # Local environment variables.
 .env.local
+
+# bv (beads viewer) local config and caches
+.bv/
+TEST_AUDIT_REPORT.md
+TEST_COVERAGE_ISSUES_CREATED.md

AGENTS.md

@@ -1783,7 +1783,7 @@ settings = ~s({"theme":"dark","notifications":true,"language":"es"})
 
 #### Comparison: Set vs Replace vs Insert vs Patch
 
-The modification functions have different behaviors:
+The modification functions have different behaviours:
 
 ```elixir
 json = ~s({"a":1,"b":2})

CLAUDE.md

@@ -46,6 +46,7 @@
 - [Architecture](#architecture)
 - [Code Structure](#code-structure)
 - [Development Workflow](#development-workflow)
+- [Issue Tracking with Beads](#issue-tracking-with-beads)
 - [Error Handling Patterns](#error-handling-patterns)
 - [Testing](#testing)
 - [Common Tasks](#common-tasks)
@@ -258,7 +259,7 @@ This project uses **Beads** (`bd` command) for issue tracking across sessions. B
 - **Beads**: Multi-session work, dependencies between tasks, discovered work that needs tracking
 - **TodoWrite**: Simple single-session task execution
 
-When in doubt, prefer Beads—persistence you don't need beats lost context.
+When in doubt, prefer Beads — persistence you don't need beats lost context.
 
 **Essential commands:**
 ```bash
@@ -294,6 +295,14 @@ bd sync --from-main                # Pull latest beads
 git add . && git commit -m "..."   # Commit changes
 ```
 
+#### Best Practices
+
+- Check `bd ready` at session start to find available work
+- Update status as you work (in_progress → closed)
+- Create new issues with `bd create` when you discover tasks
+- Use descriptive titles and set appropriate priority/type
+- Always `bd sync` before ending session
+
 ### Adding a New NIF Function
 
 **IMPORTANT**: Modern Rustler auto-detects all `#[rustler::nif]` functions. No manual registration needed.