[FIX] finalize_db: only reset `to upgrade modules, not to install`

The pre-shell state reset in ``scripts/finalize_db.sh`` forced both
``to upgrade`` and ``to install`` modules to ``installed``. Forcing
``to install`` to ``installed`` makes Odoo skip their install scripts
entirely (tables, ``noupdate`` data, init hooks never run), leaving
ghost "installed but empty" modules that the final ``-u all`` cannot
recover.

Restrict the reset to ``to upgrade`` only, whose real update is honored
by the controlled ``-u all`` at the end of the script. Also drop the
dead ``NOT IN (... state = 'uninstalled')`` sub-query: ``name`` is
unique so a module never has two states, making the filter a no-op.

A commented-out ``SELECT`` is added to trace pending-upgrade modules if
the trailing ``-u all`` is ever removed.

.gitignore

@@ -1 +1,2 @@
 final_404_addons
+migration.log

README.md

@@ -9,6 +9,7 @@ A tool for migrating Odoo databases between major versions, using [OpenUpgrade](
 - [Project Structure](#project-structure)
 - [How It Works](#how-it-works)
 - [Usage](#usage)
+- [Resuming a Failed Migration](#resuming-a-failed-migration)
 - [Customization](#customization)
 - [Troubleshooting](#troubleshooting)
 
@@ -158,7 +159,7 @@ The script performs a **step-by-step migration** between each major version. For
 ### Running the Migration
 
 ```bash
-./upgrade.sh <source_version> <target_version> <database_name> <source_service>
+./upgrade.sh <source_version> <target_version> <database_name> <source_service> [--resume-from|-r <version>]
 ```
 
 **Parameters:**
@@ -169,6 +170,11 @@ The script performs a **step-by-step migration** between each major version. For
 | `database_name` | Database name | `my_prod_db` |
 | `source_service` | Source Docker Compose service | `odoo14` |
 
+**Options:**
+| Option | Description |
+|--------|-------------|
+| `--resume-from <version>`, `-r <version>` | Resume from an intermediate checkpoint (see [Resuming a Failed Migration](#resuming-a-failed-migration)) |
+
 **Example:**
 ```bash
 ./upgrade.sh 14 17 elabore_20241208 odoo14
@@ -239,6 +245,48 @@ compose run odoo17 shell -d ou17 --no-http --stop-after-init < lib/python/valida
 - **JSON report** written to `/tmp/validation_views_<db>_<timestamp>.json`
 - **Exit code**: `0` = success, `1` = errors found
 
+## Resuming a Failed Migration
+
+Each version hop copies the database before modifying it (`ou14` → `ou15` → `ou16` → …). If a migration crashes mid-way, the intermediate databases from completed hops are still intact and can be used as a restart point.
+
+### How It Works
+
+Use `--resume-from <version>` (or `-r <version>`) to restart from an intermediate checkpoint:
+
+```bash
+./upgrade.sh <source_version> <target_version> <database_name> <source_service> --resume-from <checkpoint_version>
+```
+
+When a checkpoint is specified, the script:
+- **Skips** the initial database and filestore copy
+- **Skips** `prepare_db.sh` (already done before the crash)
+- **Starts the migration loop** from `checkpoint_version + 1`
+
+### Example
+
+A migration from 14 to 18 crashes during the 16→17 hop. The database `ou15` was successfully created. Resume from there:
+
+```bash
+./upgrade.sh 14 18 my_database odoo14 --resume-from 15
+```
+
+This runs: `16.0 → 17.0 → 18.0`, starting from `ou15`.
+
+### Constraints
+
+- The checkpoint version must be strictly between the source and target versions.
+- The intermediate database (`ou<version>`) and its filestore must exist before resuming.
+
+### Restarting From Scratch
+
+To restart a full migration from the beginning (ignoring all intermediate databases):
+
+```bash
+./upgrade.sh 14 18 my_database odoo14
+```
+
+The script automatically drops and recreates the final target database (`ou18`) if it already exists.
+
 ## Customization
 
 ### Version Scripts
@@ -365,10 +413,30 @@ The script works on a **copy** of the original database. You can restart as many
 
 ### Viewing Detailed Logs
 
-Odoo/OpenUpgrade logs are displayed in real-time. For a problematic migration:
+All output (scripts, Docker containers, OpenUpgrade logs) is automatically saved to `migration.log` at the project root. The file is overwritten at the start of each run (full migration or resume).
+
+```bash
+# Follow live output while also saving to file (already done automatically)
+tail -f migration.log
+
+# Search for errors after the fact
+grep -i error migration.log
+
+# View with ANSI colors preserved (less handles CRLF line endings natively)
+less -R migration.log
+
+# Plain text output without CRLF artifacts
+cat migration.log | col -b
+```
+
+> **Note:** `migration.log` is recorded via a pseudo-TTY (`script`), which preserves
+> color output in the terminal. As a side effect, the file uses `\r\n` line endings.
+> Use `less -R` or `col -b` for clean viewing.
+
+For a problematic migration:
 
 1. Note the version where the error occurs
-2. Check the logs to identify the problematic module/table
+2. Check `migration.log` to identify the problematic module/table
 3. Add a fix in the `pre_upgrade.sh` for that version
 4. Restart the migration
 

lib/common.sh

@@ -14,7 +14,7 @@ readonly FILESTORE_SUBPATH="var/lib/odoo/filestore"
 
 check_required_commands() {
     local missing=()
-    for cmd in docker compose sudo rsync; do
+    for cmd in docker compose sudo rsync yq; do
         if ! command -v "$cmd" &>/dev/null; then
             missing+=("$cmd")
         fi
@@ -100,7 +100,83 @@ exec_python_script_in_odoo_shell() {
     run_compose --debug run "$service_name" shell -d "$db_name" --no-http --stop-after-init < "$python_script"
 }
 
+# Classifies missing modules into 4 categories based on the known_changes.yaml
+# files from each traversed version (from ORIGIN_VERSION+1 to FINAL_VERSION).
+# The following global arrays are populated:
+#   addons_obsolete      : modules that became obsolete
+#   addons_core          : modules merged into Odoo Core
+#   addons_renamed       : renamed modules (format "old_name -> new_name")
+#   addons_truly_missing : modules that are genuinely missing
+#
+# Prerequisites: ORIGIN_VERSION and FINAL_VERSION must be exported.
+classify_missing_addons() {
+    local missing_addons_raw="$1"
+
+    addons_obsolete=()
+    addons_core=()
+    addons_renamed=()
+    addons_truly_missing=()
+
+    # Convert the string into an array (one entry per line)
+    local -a missing=()
+    while IFS= read -r line; do
+        [[ -n "$line" ]] && missing+=("$line")
+    done <<< "$missing_addons_raw"
+
+    if [[ ${#missing[@]} -eq 0 ]]; then
+        return 0
+    fi
+
+    # Build lookup tables from all known_changes.yaml files in traversed versions
+    local -A known_obsolete=()
+    local -A known_core=()
+    local -A known_renamed=()
+
+    local versions_path="${PROJECT_ROOT}/versions"
+    local v
+    for v in $(seq $((ORIGIN_VERSION + 1)) "$FINAL_VERSION"); do
+        local yaml_file="${versions_path}/${v}.0/known_changes.yaml"
+        [[ -f "$yaml_file" ]] || continue
+
+        local mod
+        while IFS= read -r mod; do
+            [[ -n "$mod" && "$mod" != "null" ]] && known_obsolete["$mod"]=1
+        done < <(yq '.obsolete[]?' "$yaml_file" 2>/dev/null)
+
+        while IFS= read -r mod; do
+            [[ -n "$mod" && "$mod" != "null" ]] && known_core["$mod"]=1
+        done < <(yq '.merged_in_core[]?' "$yaml_file" 2>/dev/null)
+
+        local count
+        count=$(yq '.renamed | length' "$yaml_file" 2>/dev/null)
+        if [[ "$count" =~ ^[0-9]+$ && "$count" -gt 0 ]]; then
+            local i
+            for ((i = 0; i < count; i++)); do
+                local old new
+                old=$(yq ".renamed[$i].old" "$yaml_file" 2>/dev/null)
+                new=$(yq ".renamed[$i].new" "$yaml_file" 2>/dev/null)
+                [[ -n "$old" && "$old" != "null" ]] && known_renamed["$old"]="$new"
+            done
+        fi
+    done
+
+    # Classify each missing module
+    local mod
+    for mod in "${missing[@]}"; do
+        if [[ -n "${known_obsolete[$mod]:-}" ]]; then
+            addons_obsolete+=("$mod")
+        elif [[ -n "${known_core[$mod]:-}" ]]; then
+            addons_core+=("$mod")
+        elif [[ -n "${known_renamed[$mod]:-}" ]]; then
+            addons_renamed+=("${mod} -> ${known_renamed[$mod]}")
+        else
+            addons_truly_missing+=("$mod")
+        fi
+    done
+}
+
 export PROJECT_ROOT DATASTORE_PATH FILESTORE_SUBPATH
 export -f log_info log_warn log_error log_step confirm_or_exit
 export -f check_required_commands
 export -f query_postgres_container copy_database copy_filestore run_compose exec_python_script_in_odoo_shell
+export -f classify_missing_addons

lib/python/regenerate_pos_hashes.py

@@ -0,0 +1,141 @@
+#!/usr/bin/env python3
+"""Regenerate all POS order inalterability hashes and sequence numbers.
+
+This script should only be called when the SQL pre-check in finalize_db.sh
+has confirmed that some pos_orders are missing l10n_fr_hash or
+l10n_fr_secure_sequence_number.
+
+It resets ALL sequence numbers and hashes from scratch, in chronological order
+(date_order ASC, id ASC), and re-establishes the full hash chain.
+
+Usage (via Odoo shell):
+    odoo-shell -d <db_name> < regenerate_pos_hashes.py
+"""
+import logging
+from hashlib import sha256
+
+_logger = logging.getLogger(__name__)
+
+
+def regenerate_all():
+    PosOrder = env['pos.order']
+    Company = env['res.company']
+
+    for company in Company.search([]):
+        if not company._is_accounting_unalterable():
+            continue
+
+        print(f"\n{'='*60}")
+        print(f" Company: {company.name}")
+        print(f"{'='*60}")
+
+        orders = PosOrder.search([
+            ('state', 'in', ['paid', 'done', 'invoiced']),
+            ('company_id', '=', company.id),
+        ], order='date_order ASC, id ASC')
+
+        if not orders:
+            print(" No orders to process.")
+            continue
+
+        n = len(orders)
+
+        # ── Step 1: Reset all fields ─────────────────────────────
+        print("\n--- Resetting fields ---")
+        env.cr.execute("""
+            UPDATE pos_order
+            SET l10n_fr_hash = NULL,
+                l10n_fr_secure_sequence_number = NULL,
+                previous_order_id = NULL
+            WHERE id IN %s
+        """, (tuple(orders.ids),))
+        env.invalidate_all()
+        env.cr.commit()
+        print(f" ✓ {n} orders reset")
+
+        # ── Step 2: Assign sequence numbers ──────────────────────
+        print("\n--- Assigning sequence numbers ---")
+        for i, order in enumerate(orders, start=1):
+            env.cr.execute("""
+                UPDATE pos_order
+                SET l10n_fr_secure_sequence_number = %s
+                WHERE id = %s
+            """, (i, order.id))
+        env.invalidate_all()
+        env.cr.commit()
+        print(f" ✓ Sequence numbers 1 → {n} assigned")
+
+        # ── Step 3: Compute previous_order_id ────────────────────
+        print("\n--- Computing previous_order_id ---")
+        orders = PosOrder.search([
+            ('state', 'in', ['paid', 'done', 'invoiced']),
+            ('company_id', '=', company.id),
+        ], order='l10n_fr_secure_sequence_number ASC')
+        orders._compute_previous_order()
+        env.cr.commit()
+        print(" ✓ OK")
+
+        # ── Step 4: Compute hashes (with cache invalidation after each write) ─
+        print("\n--- Computing hashes ---")
+        success = errors = 0
+
+        for idx in range(n):
+            order = PosOrder.search([
+                ('company_id', '=', company.id),
+                ('l10n_fr_secure_sequence_number', '=', idx + 1),
+            ], limit=1)
+
+            if not order:
+                continue
+
+            try:
+                order._compute_string_to_hash()
+
+                prev = order.previous_order_id
+                prev_hash = prev.l10n_fr_hash if prev else ''
+                if not prev_hash:
+                    prev_hash = ''
+
+                computed_hash = sha256(
+                    (prev_hash + order.l10n_fr_string_to_hash).encode('utf-8')
+                ).hexdigest()
+
+                env.cr.execute(
+                    "UPDATE pos_order SET l10n_fr_hash = %s WHERE id = %s",
+                    (computed_hash, order.id)
+                )
+
+                env.invalidate_all()
+                print(f"  ✓ {order.name} (seq {idx+1})")
+                success += 1
+
+            except Exception as e:
+                print(f"  ✗ {order.name} (seq {idx+1}) : {e}")
+                errors += 1
+                import traceback
+                traceback.print_exc()
+
+        env.cr.commit()
+
+        remaining = PosOrder.search_count([
+            ('state', 'in', ['paid', 'done', 'invoiced']),
+            ('company_id', '=', company.id),
+            '|', ('l10n_fr_hash', '=', False),
+                 ('l10n_fr_hash', '=', None),
+        ])
+        print(f"\n Final result: {success} hashes written, {errors} errors, "
+              f"{remaining} remaining")
+
+        # Reset sequence for future orders
+        seq = company.l10n_fr_pos_cert_sequence_id
+        if seq:
+            env.cr.execute(
+                "UPDATE ir_sequence SET number_next = %s WHERE id = %s",
+                (n + 1, seq.id)
+            )
+            print(f" ✓ ir_sequence number_next set to {n + 1}")
+
+    print("\n✓ Done.")
+
+
+regenerate_all()

scripts/finalize_db.sh

@@ -12,17 +12,6 @@ CLEANUP_SQL=$(cat <<'EOF'
 DROP SEQUENCE IF EXISTS base_registry_signaling;
 DROP SEQUENCE IF EXISTS base_cache_signaling;
 
--- Reset website templates to their original state.
--- Views with arch_fs (file source) that have been customized (arch_db not null)
--- are reset to use the file version, EXCEPT for actual website pages which
--- contain user content that must be preserved.
-UPDATE ir_ui_view
-SET arch_db = NULL
-WHERE arch_fs IS NOT NULL
-  AND arch_fs LIKE 'website/%'
-  AND arch_db IS NOT NULL
-  AND id NOT IN (SELECT view_id FROM website_page);
-
 -- Purge compiled frontend assets (CSS/JS bundles).
 -- These cached files reference old asset versions and must be regenerated
 -- by Odoo after migration to avoid broken stylesheets and scripts.
@@ -34,6 +23,24 @@ EOF
 )
 query_postgres_container "$CLEANUP_SQL" "$DB_NAME"
 
+# Reset modules still marked as 'to upgrade' before launching the Odoo shell
+# scripts below. Loading the registry in `odoo shell` re-triggers the upgrade
+# of these modules, which can fail on broken views (e.g. website_sale
+# TypeError). The controlled `-u all` at the end of this script performs the
+# real update afterwards. We deliberately do NOT touch 'to install' modules:
+# forcing them to 'installed' would skip their install scripts entirely.
+#
+# Uncomment the SELECT below to trace which modules were pending upgrade
+# before we neutralize their state (useful if the `-u all` above is removed).
+# query_postgres_container "
+# SELECT name FROM ir_module_module WHERE state = 'to upgrade' ORDER BY name;
+# " "$DB_NAME" || true
+query_postgres_container "
+UPDATE ir_module_module
+SET state = 'installed'
+WHERE state = 'to upgrade';
+" "$DB_NAME" || true
+
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 
 PYTHON_SCRIPT="${SCRIPT_DIR}/lib/python/fix_duplicated_views.py"
@@ -44,12 +51,40 @@ PYTHON_SCRIPT="${SCRIPT_DIR}/lib/python/cleanup_modules.py"
 echo "Uninstall obsolete add-ons with script $PYTHON_SCRIPT ..."
 exec_python_script_in_odoo_shell "$DB_NAME" "$DB_NAME" "$PYTHON_SCRIPT"
 
+# ────────────────────────────────────────────────────────────
+# Regenerate POS inalterability hashes if needed
+# ────────────────────────────────────────────────────────────
+HASHES_NEEDED=$(query_postgres_container "
+    SELECT COUNT(*) FROM information_schema.tables WHERE table_name = 'pos_order'
+" "$DB_NAME")
+if [[ "$HASHES_NEEDED" =~ ^[0-9]+$ && "$HASHES_NEEDED" -gt 0 ]]; then
+    HASHES_NEEDED=$(query_postgres_container "
+        SELECT COUNT(*)
+        FROM pos_order po
+        JOIN res_company rc ON rc.id = po.company_id
+        WHERE po.state IN ('paid', 'done', 'invoiced')
+          AND rc.l10n_fr_pos_cert_sequence_id IS NOT NULL
+          AND (po.l10n_fr_hash IS NULL OR po.l10n_fr_secure_sequence_number IS NULL)
+    " "$DB_NAME")
+fi
+
+if [[ "$HASHES_NEEDED" =~ ^[0-9]+$ && "$HASHES_NEEDED" -gt 0 ]]; then
+    echo ""
+    echo "Found $HASHES_NEEDED pos.order(s) with missing inalterability hash or sequence number."
+    echo "Regenerating all POS hashes..."
+    PYTHON_SCRIPT="${SCRIPT_DIR}/lib/python/regenerate_pos_hashes.py"
+    exec_python_script_in_odoo_shell "$DB_NAME" "$DB_NAME" "$PYTHON_SCRIPT"
+    echo "POS hash regeneration completed."
+else
+    echo "No missing POS hashes detected."
+fi
+
 # Give back the right to user to access to the tables
 # docker exec -u 70 "$DB_CONTAINER_NAME" pgm chown "$FINALE_SERVICE_NAME" "$DB_NAME"
 
 
 # Launch Odoo with database in finale version to run all updates
-run_compose --debug run "$ODOO_SERVICE" -u all --log-level=debug --stop-after-init --no-http
+run_compose --debug run "$ODOO_SERVICE" -u all --log-level=debug --stop-after-init --no-http --load=base,web,openupgrade_framework
 
 echo ""
 echo "Running post-migration view validation..."

scripts/prepare_db.sh

@@ -60,9 +60,31 @@ echo "Retrieve missing addons..."
 missing_addons=$(query_postgres_container "$SQL_MISSING_ADDONS" "$DB_NAME")
 
 log_step "ADD-ONS CHECK"
-echo "Installed add-ons not available in final Odoo version:"
-echo "$missing_addons"
-confirm_or_exit "Do you accept to migrate with these add-ons still installed?"
+classify_missing_addons "$missing_addons"
+
+if [[ ${#addons_obsolete[@]} -gt 0 ]]; then
+    log_info "Obsolete modules (${#addons_obsolete[@]}):"
+    printf "%s\n" "${addons_obsolete[@]}"
+    echo ""
+fi
+if [[ ${#addons_core[@]} -gt 0 ]]; then
+    log_info "Merged into Odoo Core (${#addons_core[@]}):"
+    printf "%s\n" "${addons_core[@]}"
+    echo ""
+fi
+if [[ ${#addons_renamed[@]} -gt 0 ]]; then
+    log_info "Renamed modules (${#addons_renamed[@]}):"
+    printf "%s\n" "${addons_renamed[@]}"
+    echo ""
+fi
+if [[ ${#addons_truly_missing[@]} -gt 0 ]]; then
+    log_warn "Truly missing modules (${#addons_truly_missing[@]}):"
+    printf "%s\n" "${addons_truly_missing[@]}"
+    echo ""
+    confirm_or_exit "Do you accept to migrate with these add-ons truly missing?"
+else
+    log_info "No truly missing modules — all accounted for."
+fi
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 PYTHON_SCRIPT="${SCRIPT_DIR}/lib/python/check_views.py"

upgrade.sh

@@ -4,13 +4,20 @@ set -euo pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 source "${SCRIPT_DIR}/lib/common.sh"
 
+readonly LOG_FILE="${SCRIPT_DIR}/migration.log"
+if [[ -z "${_MIGRATION_LOGGING:-}" ]]; then
+    rm -f "$LOG_FILE"
+    export _MIGRATION_LOGGING=1
+    exec script -q -c "$(printf '%q ' "$0" "$@")" "$LOG_FILE"
+fi
+
 ####################
 # USAGE & ARGUMENTS
 ####################
 
 usage() {
     cat <<EOF >&2
-Usage: $0 <origin_version> <final_version> <db_name> <service_name>
+Usage: $0 <origin_version> <final_version> <db_name> <service_name> [--resume-from|-r <version>]
 
 Arguments:
     origin_version   Origin Odoo version number (e.g., 12 for version 12.0)
@@ -18,29 +25,78 @@ Arguments:
     db_name          Name of the database to migrate
     service_name     Name of the origin Odoo service (docker compose service)
 
-Example:
-    $0 14 16 elabore_20241208 odoo14
+Options:
+    --resume-from, -r <version>
+                     Resume migration from an already-migrated intermediate
+                     database (e.g., ou15). Skips the initial DB copy and
+                     prepare_db.sh phases. The intermediate DB must exist.
+
+Examples:
+    $0 14 18 elabore_20241208 odoo14
+    $0 14 18 elabore_20241208 odoo14 --resume-from 15
+    $0 14 18 elabore_20241208 odoo14 -r 15
 EOF
     exit 1
 }
 
 if [[ $# -lt 4 ]]; then
-    log_error "Missing arguments. Expected 4, got $#."
+    log_error "Missing arguments. Expected at least 4, got $#."
     usage
 fi
 
 check_required_commands
 
-readonly ORIGIN_VERSION="$1"
-readonly FINAL_VERSION="$2"
+export ORIGIN_VERSION="$1"
+readonly ORIGIN_VERSION
+export FINAL_VERSION="$2"
+readonly FINAL_VERSION
 readonly ORIGIN_DB_NAME="$3"
 readonly ORIGIN_SERVICE_NAME="$4"
 
+# Parse optional --resume-from / -r flag
+RESUME_FROM_VERSION=""
+shift 4
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --resume-from|-r)
+            if [[ $# -lt 2 ]]; then
+                log_error "Option '$1' requires a version number argument."
+                usage
+            fi
+            RESUME_FROM_VERSION="$2"
+            shift 2
+            ;;
+        *)
+            log_error "Unknown option: '$1'"
+            usage
+            ;;
+    esac
+done
+readonly RESUME_FROM_VERSION
+
 readonly COPY_DB_NAME="ou${ORIGIN_VERSION}"
 export FINALE_DB_NAME="ou${FINAL_VERSION}"
 readonly FINALE_DB_NAME
 readonly FINALE_SERVICE_NAME="${FINALE_DB_NAME}"
 
+# Validate --resume-from value if provided
+if [[ -n "$RESUME_FROM_VERSION" ]]; then
+    if ! [[ "$RESUME_FROM_VERSION" =~ ^[0-9]+$ ]]; then
+        log_error "--resume-from value must be a numeric version number (got: '$RESUME_FROM_VERSION')."
+        exit 1
+    fi
+    if [[ "$RESUME_FROM_VERSION" -le "$ORIGIN_VERSION" ]]; then
+        log_error "--resume-from ($RESUME_FROM_VERSION) must be strictly greater than origin version ($ORIGIN_VERSION)."
+        log_error "To start a fresh migration, run without --resume-from."
+        exit 1
+    fi
+    if [[ "$RESUME_FROM_VERSION" -ge "$FINAL_VERSION" ]]; then
+        log_error "--resume-from ($RESUME_FROM_VERSION) must be strictly less than final version ($FINAL_VERSION)."
+        log_error "Nothing to migrate: checkpoint is at or beyond the target version."
+        exit 1
+    fi
+fi
+
 readarray -t postgres_containers < <(docker ps --format '{{.Names}}' | grep postgres || true)
 
 if [[ ${#postgres_containers[@]} -eq 0 ]]; then
@@ -59,8 +115,13 @@ readonly POSTGRES_SERVICE_NAME
 log_step "INPUT PARAMETERS"
 log_info "Origin version .......... $ORIGIN_VERSION"
 log_info "Final version ........... $FINAL_VERSION"
-log_info "Origin DB name ........... $ORIGIN_DB_NAME"
+log_info "Origin DB name .......... $ORIGIN_DB_NAME"
 log_info "Origin service name ..... $ORIGIN_SERVICE_NAME"
+if [[ -n "$RESUME_FROM_VERSION" ]]; then
+    log_info "Resume from version ..... $RESUME_FROM_VERSION (ou${RESUME_FROM_VERSION})"
+else
+    log_info "Resume from version ..... none (full migration)"
+fi
 
 log_step "COMPUTED GLOBAL VARIABLES"
 log_info "Copy DB name ............. $COPY_DB_NAME"
@@ -72,20 +133,42 @@ log_info "Postgres service name .... $POSTGRES_SERVICE_NAME"
 
 log_step "CHECKS ALL NEEDED COMPONENTS ARE AVAILABLE"
 
-db_exists=$(docker exec -it -u 70 "$POSTGRES_SERVICE_NAME" psql -tc "SELECT 1 FROM pg_database WHERE datname = '$ORIGIN_DB_NAME'" | tr -d '[:space:]')
-if [[ "$db_exists" ]]; then
-    log_info "Database '$ORIGIN_DB_NAME' found."
-else
-    log_error "Database '$ORIGIN_DB_NAME' not found in the local postgres service. Please add it and restart the upgrade process."
-    exit 1
-fi
+if [[ -n "$RESUME_FROM_VERSION" ]]; then
+    readonly RESUME_DB_NAME="ou${RESUME_FROM_VERSION}"
 
-filestore_path="${DATASTORE_PATH}/${ORIGIN_SERVICE_NAME}/${FILESTORE_SUBPATH}/${ORIGIN_DB_NAME}"
-if [[ -d "$filestore_path" ]]; then
-    log_info "Filestore '$filestore_path' found."
+    resume_db_exists=$(docker exec -u 70 "$POSTGRES_SERVICE_NAME" psql -tc "SELECT 1 FROM pg_database WHERE datname = '${RESUME_DB_NAME}'" | tr -d '[:space:]')
+    if [[ "$resume_db_exists" ]]; then
+        log_info "Checkpoint database '${RESUME_DB_NAME}' found."
+    else
+        log_error "Checkpoint database '${RESUME_DB_NAME}' not found in the local postgres service."
+        log_error "Ensure the migration up to version ${RESUME_FROM_VERSION} completed successfully before resuming."
+        exit 1
+    fi
+
+    resume_filestore_path="${DATASTORE_PATH}/${RESUME_DB_NAME}/${FILESTORE_SUBPATH}/${RESUME_DB_NAME}"
+    if [[ -d "$resume_filestore_path" ]]; then
+        log_info "Checkpoint filestore '${resume_filestore_path}' found."
+    else
+        log_error "Checkpoint filestore '${resume_filestore_path}' not found."
+        log_error "Ensure the filestore for '${RESUME_DB_NAME}' is intact before resuming."
+        exit 1
+    fi
 else
-    log_error "Filestore '$filestore_path' not found, please add it and restart the upgrade process."
-    exit 1
+    db_exists=$(docker exec -u 70 "$POSTGRES_SERVICE_NAME" psql -tc "SELECT 1 FROM pg_database WHERE datname = '$ORIGIN_DB_NAME'" | tr -d '[:space:]')
+    if [[ "$db_exists" ]]; then
+        log_info "Database '$ORIGIN_DB_NAME' found."
+    else
+        log_error "Database '$ORIGIN_DB_NAME' not found in the local postgres service. Please add it and restart the upgrade process."
+        exit 1
+    fi
+
+    filestore_path="${DATASTORE_PATH}/${ORIGIN_SERVICE_NAME}/${FILESTORE_SUBPATH}/${ORIGIN_DB_NAME}"
+    if [[ -d "$filestore_path" ]]; then
+        log_info "Filestore '$filestore_path' found."
+    else
+        log_error "Filestore '$filestore_path' not found, please add it and restart the upgrade process."
+        exit 1
+    fi
 fi
 
 log_step "LAUNCH VIRGIN ODOO IN FINAL VERSION"
@@ -100,24 +183,36 @@ run_compose --debug run "$FINALE_SERVICE_NAME" -i base --stop-after-init --no-ht
 
 log_info "Model database in final Odoo version created."
 
-log_step "COPY ORIGINAL COMPONENTS"
+if [[ -z "$RESUME_FROM_VERSION" ]]; then
+    log_step "COPY ORIGINAL COMPONENTS"
 
-copy_database "$ORIGIN_DB_NAME" "$COPY_DB_NAME" "$COPY_DB_NAME"
-log_info "Original database copied to ${COPY_DB_NAME}@${COPY_DB_NAME}."
+    copy_database "$ORIGIN_DB_NAME" "$COPY_DB_NAME" "$COPY_DB_NAME"
+    log_info "Original database copied to ${COPY_DB_NAME}@${COPY_DB_NAME}."
 
-copy_filestore "$ORIGIN_SERVICE_NAME" "$ORIGIN_DB_NAME" "$COPY_DB_NAME" "$COPY_DB_NAME"
-log_info "Original filestore copied."
+    copy_filestore "$ORIGIN_SERVICE_NAME" "$ORIGIN_DB_NAME" "$COPY_DB_NAME" "$COPY_DB_NAME"
+    log_info "Original filestore copied."
+else
+    log_step "COPY ORIGINAL COMPONENTS — SKIPPED (resuming from checkpoint ou${RESUME_FROM_VERSION})"
+fi
 
 
 log_step "PATH OF MIGRATION"
 
-readarray -t versions < <(seq $((ORIGIN_VERSION + 1)) "$FINAL_VERSION")
-log_info "Migration path is ${versions[*]}"
+if [[ -n "$RESUME_FROM_VERSION" ]]; then
+    readarray -t versions < <(seq $((RESUME_FROM_VERSION + 1)) "$FINAL_VERSION")
+    log_info "Resuming migration from ou${RESUME_FROM_VERSION} — path is ${versions[*]}"
+else
+    readarray -t versions < <(seq $((ORIGIN_VERSION + 1)) "$FINAL_VERSION")
+    log_info "Migration path is ${versions[*]}"
+fi
 
 
-log_step "DATABASE PREPARATION"
-
-"${SCRIPT_DIR}/scripts/prepare_db.sh" "$COPY_DB_NAME" "$COPY_DB_NAME" "$FINALE_DB_NAME" "$FINALE_SERVICE_NAME"
+if [[ -z "$RESUME_FROM_VERSION" ]]; then
+    log_step "DATABASE PREPARATION"
+    "${SCRIPT_DIR}/scripts/prepare_db.sh" "$COPY_DB_NAME" "$COPY_DB_NAME" "$FINALE_DB_NAME" "$FINALE_SERVICE_NAME"
+else
+    log_step "DATABASE PREPARATION — SKIPPED (resuming from checkpoint ou${RESUME_FROM_VERSION})"
+fi
 
 
 log_step "UPGRADE PROCESS"
@@ -137,3 +232,4 @@ log_step "POST-UPGRADE PROCESSES"
 "${SCRIPT_DIR}/scripts/finalize_db.sh" "$FINALE_DB_NAME" "$FINALE_SERVICE_NAME"
 
 log_step "UPGRADE PROCESS ENDED WITH SUCCESS"
+log_info "Full logs available at: ${LOG_FILE}"

versions/13.0/known_changes.yaml

@@ -0,0 +1,10 @@
+# Modules that became obsolete in version 13.0
+obsolete: []
+
+# Modules merged into Odoo Core in version 13.0
+merged_in_core: []
+
+# Modules renamed in version 13.0
+renamed: []
+#  - old: old_name
+#    new: new_name

versions/14.0/known_changes.yaml

@@ -0,0 +1,10 @@
+# Modules that became obsolete in version 14.0
+obsolete: []
+
+# Modules merged into Odoo Core in version 14.0
+merged_in_core: []
+
+# Modules renamed in version 14.0
+renamed: []
+#  - old: old_name
+#    new: new_name

versions/15.0/known_changes.yaml

@@ -0,0 +1,16 @@
+# Modules that became obsolete in version 15.0
+obsolete:
+  - l10n_ch_base_bank
+  - l10n_ch_isrb
+  - project_timeline_task_dependency
+  - account_reconcile_reconciliation_date
+
+# Modules merged into Odoo Core in version 15.0
+merged_in_core:
+  - project_category
+  - project_deadline
+
+# Modules renamed in version 15.0
+renamed:
+  - old: crm_phone
+    new: crm_phonecall

versions/16.0/known_changes.yaml

@@ -0,0 +1,23 @@
+# Modules that became obsolete in version 16.0
+obsolete:
+  - account_reconciliation_widget
+  - account_statement_import
+  - account_statement_import_file_reconciliation_widget
+
+# Modules merged into Odoo Core in version 16.0
+merged_in_core:
+  - account_balance_line
+  - l10n_ch_states
+  - project_task_dependency
+  - web_ir_actions_act_view_reload
+  - mail_activity_creator
+  - website_sale_require_login
+
+# Modules renamed in version 16.0
+renamed:
+  - old: account_statement_import_file_reconcile_oca
+    new: account_statement_import_file_reconcile_oca
+  - old: mass_editing
+    new: server_action_mass_edit
+  - old: crm_project
+    new: crm_lead_to_task

versions/17.0/known_changes.yaml

@@ -0,0 +1,13 @@
+# Modules that became obsolete in version 17.0
+obsolete: []
+
+# Modules merged into Odoo Core in version 17.0
+merged_in_core:
+  - project_list
+  - web_advanced_search
+  - web_listview_range_select
+
+# Modules renamed in version 17.0
+renamed: []
+#  - old: old_name
+#    new: new_name

versions/18.0/known_changes.yaml

@@ -0,0 +1,36 @@
+# Modules that became obsolete in version 18.0
+obsolete:
+  - account_payment_paired_internal_transfer
+  - account_reconciliation_widget
+
+# Modules merged into Odoo Core in version 18.0
+merged_in_core:
+  - account_payment_partner
+  - hr_expense_report_merge_attachment
+
+# Modules renamed in version 18.0
+renamed:
+  # Refactor bank-payment-alternative
+  - old: account_payment_mode
+    new: account_payment_base_oca
+  - old: account_payment_sale
+    new: account_payment_base_oca_sale
+  - old: account_payment_order
+    new: account_payment_batch_oca
+  - old: account_payment_order_tier_validation
+    new: account_payment_batch_oca_tier_validation
+  - old: account_banking_pain_base
+    new: account_payment_sepa_base
+  - old: account_banking_sepa_credit_transfer
+    new: account_payment_sepa_credit_transfer
+  - old: account_banking_mandate
+    new: account_payment_mandate
+  - old: account_banking_mandate_sale
+    new: account_payment_mandate_sale
+  - old: account_banking_sepa_direct_debit
+    new: account_payment_sepa_direct_debit
+  # End refactor
+  - old: base_delivery_carrier_label
+    new: delivery_shipping_label_default
+  - old: l10n_fr_oca
+    new: l10n_fr_account_oca

versions/18.0/post_upgrade.sh

@@ -116,7 +116,7 @@ BEGIN
 
     RAISE NOTICE 'Starting account_payment_batch_oca migration...';
 
-    IF EXISTS (SELECT FROM information_schema.columns 
+    IF EXISTS (SELECT FROM information_schema.columns
                WHERE table_name = 'account_payment_method' AND column_name = 'payment_order_only') THEN
         UPDATE account_payment_method
         SET payment_order_ok = payment_order_only
@@ -136,7 +136,7 @@ BEGIN
     WHERE apml.old_payment_mode_id IS NOT NULL
     AND apm.id = apml.old_payment_mode_id;
 
-    IF EXISTS (SELECT FROM information_schema.tables 
+    IF EXISTS (SELECT FROM information_schema.tables
                WHERE table_name = 'account_journal_account_payment_method_line_rel') THEN
         DELETE FROM account_journal_account_payment_method_line_rel
         WHERE account_payment_method_line_id IN (
@@ -173,4 +173,236 @@ else
     echo "Table account_payment_mode not found, skipping bank-payment migration."
 fi
 
+# ============================================================================
+# FIX: stock_picking name='/' and missing POS picking type sequences
+#
+# Two issues can occur after migration:
+#
+# 1. stock_picking records with name='/' violate the new V18 unique constraint
+#    stock_picking_name_uniq (name, company_id). In previous versions this
+#    constraint did not exist, so multiple pickings could share name='/'.
+#
+# 2. POS picking types (pos_type_id on stock_warehouse) may lack a sequence_id.
+#    In V18, stock.picking.create() assigns the name from picking_type.sequence_id,
+#    but if sequence_id is NULL the name stays '/' and the unique constraint is
+#    violated on every new POS payment.
+#
+#    The standard _create_missing_pos_picking_types() only fixes warehouses where
+#    pos_type_id is NULL — it does NOT fix existing pos_type_id records that are
+#    missing their sequence_id.
+#
+# Only executed if stock module tables exist.
+# ============================================================================
+
+STOCK_PICKING_TABLE_EXISTS=$(query_postgres_container "SELECT COUNT(*) FROM information_schema.tables WHERE table_name = 'stock_picking';" ou18 2>/dev/null | grep -E '^\s*[0-9]+' | tr -d ' ' || echo "0")
+
+if [ "$STOCK_PICKING_TABLE_EXISTS" -gt 0 ]; then
+    echo "stock_picking table exists, proceeding with POS picking fixes..."
+
+    # --- Step 1: Rename stock_picking records with name='/' ---
+    FIX_SLASH_PICKING_NAMES_SQL=$(cat <<'EOF'
+DO $$
+DECLARE
+    slash_count INTEGER;
+BEGIN
+    IF NOT EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'stock_picking') THEN
+        RAISE NOTICE 'stock_picking table not found, skipping slash name fix';
+        RETURN;
+    END IF;
+
+    SELECT COUNT(*) INTO slash_count FROM stock_picking WHERE name = '/';
+
+    IF slash_count > 0 THEN
+        UPDATE stock_picking SET name = 'MIGRATED-' || id WHERE name = '/';
+        RAISE NOTICE 'Renamed % stock_picking record(s) with name=/ to MIGRATED-<id>', slash_count;
+    ELSE
+        RAISE NOTICE 'No stock_picking with name=/ found, nothing to rename';
+    END IF;
+END $$;
+EOF
+)
+    echo "Fixing stock_picking names with '/'..."
+    query_postgres_container "$FIX_SLASH_PICKING_NAMES_SQL" ou18 || exit 1
+
+    # --- Step 2: Create missing ir.sequence for POS picking types without sequence ---
+    FIX_POS_PICKING_TYPE_SEQUENCES_SQL=$(cat <<'EOF'
+DO $$
+DECLARE
+    pt_rec RECORD;
+    seq_id INTEGER;
+    seq_name TEXT;
+    seq_prefix TEXT;
+BEGIN
+    IF NOT EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'stock_picking_type') THEN
+        RAISE NOTICE 'stock_picking_type table not found, skipping POS sequence fix';
+        RETURN;
+    END IF;
+
+    IF NOT EXISTS (SELECT FROM information_schema.columns
+                   WHERE table_name = 'stock_warehouse' AND column_name = 'pos_type_id') THEN
+        RAISE NOTICE 'stock_warehouse.pos_type_id column not found (point_of_sale not installed), skipping POS sequence fix';
+        RETURN;
+    END IF;
+
+    FOR pt_rec IN
+        SELECT spt.id AS picking_type_id,
+               spt.name AS picking_type_name,
+               COALESCE(spt.sequence_code, 'POS') AS sequence_code,
+               sw.code AS warehouse_code,
+               sw.name AS warehouse_name,
+               sw.company_id
+        FROM stock_picking_type spt
+        JOIN stock_warehouse sw ON sw.pos_type_id = spt.id
+        WHERE spt.sequence_id IS NULL OR spt.sequence_id = 0
+    LOOP
+        seq_prefix := pt_rec.warehouse_code || '/' || pt_rec.sequence_code || '/';
+        seq_name := pt_rec.warehouse_name || ' Picking POS';
+
+        INSERT INTO ir_sequence (
+            name, prefix, padding, company_id, implementation,
+            number_increment, number_next, active
+        ) VALUES (
+            seq_name, seq_prefix, 5, pt_rec.company_id, 'standard',
+            1, 1, true
+        ) RETURNING id INTO seq_id;
+
+        UPDATE stock_picking_type
+        SET sequence_id = seq_id
+        WHERE id = pt_rec.picking_type_id;
+
+        RAISE NOTICE 'Created ir.sequence % (%) for POS picking type % (ID:%) on warehouse %',
+            seq_name, seq_id, pt_rec.picking_type_name, pt_rec.picking_type_id, pt_rec.warehouse_name;
+    END LOOP;
+END $$;
+EOF
+)
+    echo "Creating missing POS picking type sequences..."
+    query_postgres_container "$FIX_POS_PICKING_TYPE_SEQUENCES_SQL" ou18 || exit 1
+
+    # --- Step 3: Create missing PostgreSQL sequences for ir.sequence records ---
+    # When ir.sequence records are created via SQL INSERT (not ORM), the underlying
+    # PostgreSQL sequence (ir_sequence_NNN) is NOT created. This causes errors when
+    # Odoo tries to read or use the sequence.
+    FIX_MISSING_PG_SEQUENCES_SQL=$(cat <<'EOF'
+DO $$
+DECLARE
+    seq_rec RECORD;
+    seq_pg_name TEXT;
+    seq_count INTEGER;
+BEGIN
+    seq_count := 0;
+
+    FOR seq_rec IN
+        SELECT id, number_increment, number_next
+        FROM ir_sequence
+        WHERE implementation = 'standard'
+    LOOP
+        seq_pg_name := 'ir_sequence_' || lpad(seq_rec.id::text, 3, '0');
+
+        IF NOT EXISTS (
+            SELECT 1 FROM pg_class
+            WHERE relkind = 'S' AND relname = seq_pg_name
+        ) THEN
+            EXECUTE format('CREATE SEQUENCE %I INCREMENT BY %s START WITH %s',
+                seq_pg_name, seq_rec.number_increment, seq_rec.number_next);
+            seq_count := seq_count + 1;
+            RAISE NOTICE 'Created PostgreSQL sequence %', seq_pg_name;
+        END IF;
+    END LOOP;
+
+    IF seq_count > 0 THEN
+        RAISE NOTICE 'Created % missing PostgreSQL sequence(s)', seq_count;
+    ELSE
+        RAISE NOTICE 'All PostgreSQL sequences already exist, nothing to create';
+    END IF;
+END $$;
+EOF
+)
+    echo "Creating missing PostgreSQL sequences for ir.sequence records..."
+    query_postgres_container "$FIX_MISSING_PG_SEQUENCES_SQL" ou18 || exit 1
+
+    # --- Step 4: Grant permissions on newly created PostgreSQL sequences ---
+    # Sequences created above are owned by the current DB user, but we ensure
+    # the Odoo DB user has proper access (needed when created by a different superuser).
+    GRANT_PG_SEQUENCES_SQL=$(cat <<'EOF'
+DO $$
+DECLARE
+    seq_rec RECORD;
+    seq_pg_name TEXT;
+    db_user TEXT;
+    grant_count INTEGER;
+BEGIN
+    -- Determine the Odoo database user from the current connection
+    SELECT current_user INTO db_user;
+    grant_count := 0;
+
+    FOR seq_rec IN
+        SELECT id
+        FROM ir_sequence
+        WHERE implementation = 'standard'
+    LOOP
+        seq_pg_name := 'ir_sequence_' || lpad(seq_rec.id::text, 3, '0');
+
+        IF EXISTS (
+            SELECT 1 FROM pg_class
+            WHERE relkind = 'S' AND relname = seq_pg_name
+        ) THEN
+            BEGIN
+                EXECUTE format('GRANT ALL ON SEQUENCE %I TO %I', seq_pg_name, db_user);
+                grant_count := grant_count + 1;
+            EXCEPTION WHEN insufficient_privilege THEN
+                RAISE NOTICE 'Cannot GRANT on % (not owner), skipping', seq_pg_name;
+            END;
+        END IF;
+    END LOOP;
+
+    RAISE NOTICE 'Granted permissions on % PostgreSQL sequence(s) to %', grant_count, db_user;
+END $$;
+EOF
+)
+    echo "Granting permissions on PostgreSQL sequences..."
+    query_postgres_container "$GRANT_PG_SEQUENCES_SQL" ou18 || exit 1
+
+    # --- Step 5: Verification ---
+    VERIFY_POS_FIXES_SQL=$(cat <<'EOF'
+DO $$
+DECLARE
+    slash_count INTEGER;
+    missing_seq_count INTEGER;
+BEGIN
+    -- Check remaining pickings with name='/'
+    IF EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'stock_picking') THEN
+        SELECT COUNT(*) INTO slash_count FROM stock_picking WHERE name = '/';
+        IF slash_count > 0 THEN
+            RAISE WARNING 'Still % stock_picking record(s) with name=/', slash_count;
+        ELSE
+            RAISE NOTICE 'OK: No stock_picking with name=/ remaining';
+        END IF;
+    END IF;
+
+    -- Check POS picking types without sequence
+    IF EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'stock_picking_type')
+       AND EXISTS (SELECT FROM information_schema.columns
+                   WHERE table_name = 'stock_warehouse' AND column_name = 'pos_type_id') THEN
+        SELECT COUNT(*) INTO missing_seq_count
+        FROM stock_picking_type spt
+        JOIN stock_warehouse sw ON sw.pos_type_id = spt.id
+        WHERE spt.sequence_id IS NULL OR spt.sequence_id = 0;
+
+        IF missing_seq_count > 0 THEN
+            RAISE WARNING 'Still % POS picking type(s) without sequence_id', missing_seq_count;
+        ELSE
+            RAISE NOTICE 'OK: All POS picking types have a sequence_id';
+        END IF;
+    END IF;
+END $$;
+EOF
+)
+    echo "Verifying POS picking fixes..."
+    query_postgres_container "$VERIFY_POS_FIXES_SQL" ou18 || exit 1
+
+else
+    echo "stock_picking table not found, skipping POS picking fixes."
+fi
+
 echo "Post migration to 18.0 completed!"

versions/18.0/pre_upgrade.sh

@@ -127,6 +127,8 @@ EOF
 # Execute SQL pre-migration commands
 PRE_MIGRATE_SQL=$(cat <<'EOF'
 UPDATE account_analytic_plan SET default_applicability=NULL WHERE default_applicability='optional';
+DELETE FROM ir_ui_view WHERE model = 'res.config.settings';
+
 EOF
 )
 echo "SQL command = $PRE_MIGRATE_SQL"