fix: remove --rollover CLI flag, keep it config-only

Rollover is now activated exclusively via AICOMMIT_ROLLOVER env var
or ~/.aicommitrc config file. No CLI flag.

Author: Moussa-M

README.md

@@ -111,12 +111,9 @@ component never has a max:
 | `X.Y`   | Y max 10                       | `1.9` + patch → `2.0`            |
 | `X`     | no max                         | `9` + patch → `10`               |
 
-The feature is **off by default**. Enable it per run, per shell, or persistently:
+The feature is **off by default**. Enable it per shell or persistently:
 
 ```bash
-# Per run
-aicommit --release --rollover
-
 # Per shell / CI
 export AICOMMIT_ROLLOVER=true
 

aicommit

@@ -106,9 +106,6 @@ show_help() {
     echo -e "                              ${C_DIM}If omitted, AI auto-detects the bump type.${C_RESET}"
     echo -e "  ${C_GREEN}--remap${C_RESET}                   Re-run AI version-file discovery and regenerate"
     echo -e "                              ${C_DIM}.aicommit/bump-version.sh for this project.${C_RESET}"
-    echo -e "  ${C_GREEN}--rollover${C_RESET}                Enable version rollover: components that reach their"
-    echo -e "                              ${C_DIM}max carry into the next one (X.Y.Z: Y max 10, Z max 100;${C_RESET}"
-    echo -e "                              ${C_DIM}X.Y: Y max 10; X: no max). Off by default.${C_RESET}"
     echo -e "  ${C_GREEN}--update${C_RESET}                  Update aicommit to the latest release from GitHub."
     echo -e "  ${C_GREEN}-v${C_RESET}, ${C_GREEN}-V${C_RESET}, ${C_GREEN}--version${C_RESET}      Show version information."
     echo -e "  ${C_GREEN}-h${C_RESET}, ${C_GREEN}--help${C_RESET}               Show this help message."
@@ -421,8 +418,6 @@ AUTO_PULL=false
 RELEASE_MODE=false
 RELEASE_ARG=""
 REMAP=false
-CLI_ROLLOVER=false
-
 # Save original args before the while loop consumes them (needed for re-exec after upgrade)
 ORIGINAL_ARGS=("$@")
 
@@ -433,7 +428,6 @@ while (( "$#" )); do
         --pull)        AUTO_PULL=true ;;
         --changelog|-c) UPDATE_CHANGELOG=true ;;
         --remap)       REMAP=true ;;
-        --rollover)    CLI_ROLLOVER=true ;;
         --provider|-p)
             shift
             if [[ -z "${1:-}" || "${1:-}" =~ ^- ]]; then
@@ -612,11 +606,9 @@ MODEL_URL="${MODEL_URL%/}"
 # ---------- Resolve version rollover (off by default) ----------
 # When enabled, version components that reach their max carry over into the
 # next more-significant component (like digits in a number system).
-# Precedence: CLI --rollover > AICOMMIT_ROLLOVER env > config file > off.
+# Precedence: AICOMMIT_ROLLOVER env > config file > off.
 ROLLOVER=false
-if [[ "$CLI_ROLLOVER" == "true" ]]; then
-    ROLLOVER=true
-elif [[ -n "${AICOMMIT_ROLLOVER:-}" ]]; then
+if [[ -n "${AICOMMIT_ROLLOVER:-}" ]]; then
     [[ "${AICOMMIT_ROLLOVER,,}" == "true" || "$AICOMMIT_ROLLOVER" == "1" ]] && ROLLOVER=true
 elif [[ -f "$CONFIG_FILE" ]]; then
     cfg_rollover=$(grep -E '^AICOMMIT_ROLLOVER=' "$CONFIG_FILE" 2>/dev/null | head -1 | cut -d= -f2 | tr -d '[:space:]"'"'" || true)

tests/integration/test_rollover.bats

@@ -15,10 +15,10 @@ setup() {
   ROLLOVER_MAX_PATCH=100
 }
 
-@test "aicommit --rollover flag exists in help" {
+@test "aicommit help does not expose rollover as a flag" {
   run "$AICOMMIT_SCRIPT" --help
   [ "$status" -eq 0 ]
-  [[ "$output" =~ "--rollover" ]]
+  ! [[ "$output" =~ "--rollover" ]]
 }
 
 # ---------- rollover OFF (default): legacy behaviour ----------