feat: Add support for tabular/csv data input.

examples/demo.sh

@@ -311,6 +311,74 @@ multi_select_structured() {
         | pikl --multi --structured
 }
 
+# ── Phase 5 demos ────────────────────────────────────────
+
+csv_table() {
+    echo "CSV table mode. Columns auto-generated from headers." >&2
+    echo "Navigate with j/k, filter normally." >&2
+    echo "" >&2
+    cat <<'CSV' | pikl --input-format csv
+name,role,language,editor
+Alice,backend,Rust,Neovim
+Bob,frontend,TypeScript,VS Code
+Charlie,devops,Go,Helix
+Diana,data,Python,Jupyter
+Eve,security,Rust,Neovim
+Frank,mobile,Kotlin,IntelliJ
+CSV
+}
+
+tsv_table() {
+    echo "TSV table mode. Same as CSV but tab-delimited." >&2
+    echo "" >&2
+    printf "pid\tuser\tcommand\n101\troot\tinit\n202\tmaple\tnvim\n303\tmaple\tbash\n404\troot\tsshd\n" \
+        | pikl --input-format tsv
+}
+
+csv_columns_alias() {
+    echo "CSV with --columns to pick a subset and rename headers." >&2
+    echo "Only showing name and language (aliased to 'Lang')." >&2
+    echo "" >&2
+    cat <<'CSV' | pikl --input-format csv --columns "name,meta.language:Lang"
+name,role,language,editor
+Alice,backend,Rust,Neovim
+Bob,frontend,TypeScript,VS Code
+Charlie,devops,Go,Helix
+Diana,data,Python,Jupyter
+Eve,security,Rust,Neovim
+CSV
+}
+
+csv_multi_select() {
+    echo "CSV + multi-select. Toggle rows with Space, confirm with Enter." >&2
+    echo "" >&2
+    cat <<'CSV' | pikl --input-format csv --multi
+package,version,size
+ripgrep,14.1,2.1M
+fd,10.2,1.8M
+bat,0.24,3.4M
+eza,0.18,2.0M
+delta,0.17,4.2M
+tokei,12.1,1.5M
+CSV
+}
+
+csv_filter() {
+    echo "CSV with filtering. Type to filter rows, field filters work too." >&2
+    echo "Try: meta.category:rolling" >&2
+    echo "" >&2
+    cat <<'CSV' | pikl --input-format csv
+label,category,init
+Arch Linux,rolling,systemd
+NixOS,rolling,systemd
+Void Linux,rolling,runit
+Debian,stable,systemd
+Alpine,stable,openrc
+Fedora,semi-rolling,systemd
+Gentoo,rolling,openrc
+CSV
+}
+
 # ── Scenario menu ─────────────────────────────────────────
 
 scenarios=(
@@ -337,6 +405,12 @@ scenarios=(
     "Multi-select (packages)"
     "Multi-select (structured output)"
     "---"
+    "CSV table (auto columns)"
+    "TSV table (processes)"
+    "CSV with --columns aliases"
+    "CSV + multi-select"
+    "CSV + field filter"
+    "---"
     "on-select-exec hook (legacy)"
 )
 
@@ -362,6 +436,11 @@ run_scenario() {
         *"Multi-select (basic)"*)   multi_select_basic ;;
         *"Multi-select (pack"*)     multi_select_packages ;;
         *"Multi-select (struct"*)   multi_select_structured ;;
+        *"CSV table"*)              csv_table ;;
+        *"TSV table"*)              tsv_table ;;
+        *"CSV with --columns"*)     csv_columns_alias ;;
+        *"CSV + multi"*)            csv_multi_select ;;
+        *"CSV + field"*)            csv_filter ;;
         *"on-select-exec"*)         on_select_hook ;;
         "---")
             echo "that's a separator, not a scenario" >&2