Release version 1.1.11

- Trigger CI on push for all branches and on pull_request
- Detect SemVer release tags (vX.Y.Z) via git tag --points-at
- Run publish-image and stable-tag only for tagged commits on main
- Pass version_tag and sha to reusable workflows
- Prevent tag pushes from triggering additional workflows

https://chatgpt.com/share/e/699044d3-c1d8-8013-a40d-974d1fc69974

.github/workflows/ci.yml

@@ -1,11 +1,76 @@
 name: ci
 
 on:
-  pull_request:
+  pull_request: {}
   push:
     branches:
-      - main
+      - "**"
+
+permissions:
+  contents: write
+  packages: write
 
 jobs:
   tests:
     uses: ./.github/workflows/reusable-test.yml
+    with:
+      python-version: "3.12"
+      matomo-token-description: "ci-token"
+
+  detect-release:
+    # Only consider releases on main branch pushes (not PRs, not other branches)
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    outputs:
+      is_semver_tag: ${{ steps.detect.outputs.is_semver_tag }}
+      version_tag: ${{ steps.detect.outputs.version_tag }}
+    steps:
+      - name: Checkout (full history for tags)
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - id: detect
+        shell: bash
+        run: |
+          set -euo pipefail
+          git fetch --tags --force
+
+          # Tags that point to the current commit
+          TAGS="$(git tag --points-at "$GITHUB_SHA" || true)"
+
+          # Pick the first strict SemVer tag: vX.Y.Z
+          VERSION_TAG="$(echo "$TAGS" | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | head -n1 || true)"
+
+          if [ -n "$VERSION_TAG" ]; then
+            echo "is_semver_tag=true" >> "$GITHUB_OUTPUT"
+            echo "version_tag=$VERSION_TAG" >> "$GITHUB_OUTPUT"
+            echo "Release tag detected on this commit: $VERSION_TAG"
+          else
+            echo "is_semver_tag=false" >> "$GITHUB_OUTPUT"
+            echo "version_tag=" >> "$GITHUB_OUTPUT"
+            echo "No SemVer tag on this commit."
+          fi
+
+  publish-image:
+    # Only on main, and only if detect-release found a SemVer tag on this commit
+    if: needs.detect-release.outputs.is_semver_tag == 'true'
+    needs: [tests, detect-release]
+    uses: ./.github/workflows/publish-image.yml
+    with:
+      version_tag: ${{ needs.detect-release.outputs.version_tag }}
+      sha: ${{ github.sha }}
+    permissions:
+      contents: read
+      packages: write
+
+  tag-stable:
+    # Only after tests + publish succeeded
+    if: needs.detect-release.outputs.is_semver_tag == 'true'
+    needs: [tests, detect-release, publish-image]
+    uses: ./.github/workflows/stable-tag.yml
+    with:
+      version_tag: ${{ needs.detect-release.outputs.version_tag }}
+      sha: ${{ github.sha }}
+    permissions:
+      contents: write

.github/workflows/publish-image.yml

@@ -1,32 +1,28 @@
 name: publish-image
 
 on:
-  push:
-    tags:
-      - "v*.*.*"
-
-  workflow_run:
-    workflows: ["Stable Tag"]   # MUST match stable-tag.yml -> name: Stable Tag
-    types: [completed]
+  workflow_call:
+    inputs:
+      version_tag:
+        type: string
+        required: true
+      sha:
+        type: string
+        required: true
 
 jobs:
   build-and-push:
-    if: |
-      (github.event_name == 'push') ||
-      (github.event_name == 'workflow_run' && github.event.workflow_run.conclusion == 'success')
-
     runs-on: ubuntu-latest
     permissions:
       contents: read
       packages: write
 
     steps:
-      - name: Checkout
+      - name: Checkout (exact commit)
         uses: actions/checkout@v4
         with:
-          # push: checks out the tag ref
-          # workflow_run: checks out the exact commit that the Stable Tag workflow ran on
-          ref: ${{ github.event_name == 'workflow_run' && github.event.workflow_run.head_sha || github.ref }}
+          fetch-depth: 0
+          ref: ${{ inputs.sha }}
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -47,13 +43,9 @@ jobs:
         run: |
           set -euo pipefail
           IMAGE="ghcr.io/${{ github.repository }}"
-
-          if [ "${{ github.event_name }}" = "push" ]; then
-            TAG="${{ github.ref_name }}"     # e.g. v1.1.0
+          RAW_TAG="${{ inputs.version_tag }}"   # e.g. v1.1.8
+          TAG="${RAW_TAG#v}"                    # -> 1.1.8
           echo "tags=$IMAGE:$TAG,$IMAGE:latest" >> "$GITHUB_OUTPUT"
-          else
-            echo "tags=$IMAGE:stable" >> "$GITHUB_OUTPUT"
-          fi
 
       - name: Build and push
         uses: docker/build-push-action@v6

.github/workflows/reusable-test.yml

@@ -52,6 +52,21 @@ jobs:
           ruff check .
           ruff format --check .
 
+  integration:
+    runs-on: ubuntu-latest
+    needs: lint
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ inputs.python-version }}
+
+      - name: Integration tests
+        run: make test-integration
+
   e2e:
     runs-on: ubuntu-latest
     timeout-minutes: 30

.github/workflows/stable-tag.yml

@@ -1,24 +1,21 @@
 name: Stable Tag
 
 on:
-  push:
-    tags:
-      - "v*"
+  workflow_call:
+    inputs:
+      version_tag:
+        type: string
+        required: true
+      sha:
+        type: string
+        required: true
 
 permissions:
   contents: write
 
 jobs:
-  test:
-    uses: ./.github/workflows/reusable-test.yml
-    with:
-      python-version: "3.12"
-      matomo-token-description: "stable-ci-token"
-
   tag-stable:
     runs-on: ubuntu-latest
-    needs: test
-    if: startsWith(github.ref, 'refs/tags/v')
 
     steps:
       - name: Checkout (full history for tags)
@@ -26,17 +23,17 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Move stable tag to this version tag commit
+      - name: Move stable tag to the release commit
+        shell: bash
         run: |
           set -euo pipefail
 
-          echo "Triggered by tag: ${GITHUB_REF_NAME}"
-          echo "Commit: ${GITHUB_SHA}"
+          echo "Release tag: ${{ inputs.version_tag }}"
+          echo "Commit: ${{ inputs.sha }}"
 
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
 
           git fetch --tags --force
-
-          git tag -fa stable -m "stable -> ${GITHUB_REF_NAME} (${GITHUB_SHA})" "${GITHUB_SHA}"
+          git tag -fa stable -m "stable -> ${{ inputs.version_tag }} (${{ inputs.sha }})" "${{ inputs.sha }}"
           git push --force origin stable

CHANGELOG.md

@@ -1,3 +1,53 @@
+## [1.1.11] - 2026-02-14
+
+* This release improves matomo-bootstrap installer resilience by adding robust setupSuperUser field and button detection to prevent intermittent bootstrap failures.
+
+
+## [1.1.10] - 2026-02-14
+
+* This release fixes a reproducible Playwright navigation race in the Matomo installer (setupSuperUser), hardens the Next/Continue flow, and adds integration tests for transient locator errors and progress detection without a visible Next button.
+
+
+## [1.1.9] - 2026-02-14
+
+* Reworked CI to run on all branches while restricting Docker image publishing and stable tagging to tagged commits on main, using git-based SemVer detection.
+
+
+## [1.1.8] - 2026-02-14
+
+* Refactored CI to use a single coordinator workflow with strict SemVer-based release gating and adjusted Docker image publishing to strip the leading v from version tags.
+
+
+## [1.1.7] - 2026-02-14
+
+* Harden compose installer timeouts and e2e stack diagnostics
+
+
+## [1.1.6] - 2026-02-14
+
+* Add installer table-step timeout env vars (MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S, MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S) to compose/docs and e2e checks.
+
+
+## [1.1.5] - 2026-02-14
+
+* Harden web installer flow for nix e2e
+
+
+## [1.1.4] - 2026-02-13
+
+* This release hardens Matomo bootstrap by adding installer UI readiness waits/retries.
+
+
+## [1.1.3] - 2026-02-12
+
+* Increase Playwright step wait from 200ms to 1000ms to improve CI stability during Matomo installation.
+
+
+## [1.1.2] - 2025-12-24
+
+* **Improved error visibility during Matomo installation**: When the setup fails (for example due to an invalid admin email or missing required fields), the installer now **prints the actual Matomo error messages to the logs**, instead of failing with a generic error.
+
+
 ## [1.1.1] - 2025-12-24
 
 * Improved Docker image publishing: automatic `vX.Y.Z`, `latest`, and `stable` tags for releases.

Makefile

@@ -34,6 +34,7 @@ COMPOSE_STACK := docker compose -f $(COMPOSE_STACK_FILE)
 
 .PHONY: help \
         venv deps-e2e playwright-install e2e-up e2e-install e2e-test e2e-down e2e logs clean \
+        test-integration \
         image-build image-run image-shell image-push image-clean \
         stack-up stack-down stack-logs stack-ps stack-bootstrap stack-rebootstrap stack-clean stack-reset
 
@@ -49,6 +50,7 @@ help:
 	@echo "  e2e                Full cycle: up → install → test → down"
 	@echo "  logs               Show Matomo logs (E2E compose)"
 	@echo "  clean              Stop E2E containers + remove venv"
+	@echo "  test-integration   Run integration tests (unittest)"
 	@echo ""
 	@echo "Container image targets:"
 	@echo "  image-build        Build matomo-bootstrap container image"
@@ -76,8 +78,46 @@ help:
 # ----------------------------
 
 venv:
-	@test -x "$(VENV_PY)" || ($(PYTHON) -m venv $(VENV_DIR))
-	@$(VENV_PIP) -q install -U pip setuptools wheel >/dev/null
+	@set -e; \
+	if [ ! -d "$(VENV_DIR)" ]; then \
+		echo "Creating $(VENV_DIR) ..."; \
+		$(PYTHON) -m venv "$(VENV_DIR)"; \
+	fi; \
+	if ! [ -x "$(VENV_PY)" ] || ! "$(VENV_PY)" -V >/dev/null 2>&1; then \
+		echo "Repairing $(VENV_PY) symlink ..."; \
+		fix_target=""; \
+		for cand in "$(VENV_DIR)/bin/python3.14" "$(VENV_DIR)/bin/python3.13" "$(VENV_DIR)/bin/python3.12" "$(VENV_DIR)/bin/python3.11" "$(VENV_DIR)/bin/python3.10"; do \
+			if [ -x "$$cand" ]; then \
+				fix_target="$$(basename "$$cand")"; \
+				break; \
+			fi; \
+		done; \
+		if [ -z "$$fix_target" ] && [ -x "$(VENV_PIP)" ]; then \
+			shebang="$$(head -n1 "$(VENV_PIP)" | sed 's/^#!//')"; \
+			if [ -n "$$shebang" ] && [ -x "$$shebang" ]; then \
+				fix_target="$$(basename "$$shebang")"; \
+			fi; \
+		fi; \
+		if [ -n "$$fix_target" ] && [ -x "$(VENV_DIR)/bin/$$fix_target" ]; then \
+			ln -sfn "$$fix_target" "$(VENV_PY)"; \
+			ln -sfn "$$fix_target" "$(VENV_DIR)/bin/python3"; \
+		fi; \
+	fi; \
+	if ! [ -x "$(VENV_PIP)" ] || ! "$(VENV_PIP)" --version >/dev/null 2>&1; then \
+		echo "Repairing pip via ensurepip ..."; \
+		"$(VENV_PY)" -m ensurepip --upgrade >/dev/null 2>&1 || true; \
+	fi; \
+	if ! [ -x "$(VENV_PY)" ] || ! "$(VENV_PY)" -V >/dev/null 2>&1; then \
+		echo "ERROR: Could not repair $(VENV_PY) in existing $(VENV_DIR)."; \
+		echo "Run 'make clean' once or remove $(VENV_DIR) manually."; \
+		exit 2; \
+	fi; \
+	if ! [ -x "$(VENV_PIP)" ] || ! "$(VENV_PIP)" --version >/dev/null 2>&1; then \
+		echo "ERROR: Could not repair $(VENV_PIP) in existing $(VENV_DIR)."; \
+		echo "Run 'make clean' once or remove $(VENV_DIR) manually."; \
+		exit 2; \
+	fi; \
+	"$(VENV_PIP)" -q install -U pip setuptools wheel >/dev/null
 
 deps-e2e: venv
 	@$(VENV_PIP) install -e ".[e2e]"
@@ -129,6 +169,13 @@ logs:
 clean: e2e-down
 	rm -rf $(VENV_DIR)
 
+# ----------------------------
+# Integration tests
+# ----------------------------
+
+test-integration:
+	PYTHONPATH=src $(PYTHON) -m unittest discover -s tests/integration -v
+
 # ----------------------------
 # Container image workflow
 # ----------------------------

README.md

@@ -1,4 +1,6 @@
 # matomo-bootstrap
+[![GitHub Sponsors](https://img.shields.io/badge/Sponsor-GitHub%20Sponsors-blue?logo=github)](https://github.com/sponsors/kevinveenbirkenbach) [![Patreon](https://img.shields.io/badge/Support-Patreon-orange?logo=patreon)](https://www.patreon.com/c/kevinveenbirkenbach) [![Buy Me a Coffee](https://img.shields.io/badge/Buy%20me%20a%20Coffee-Funding-yellow?logo=buymeacoffee)](https://buymeacoffee.com/kevinveenbirkenbach) [![PayPal](https://img.shields.io/badge/Donate-PayPal-blue?logo=paypal)](https://s.veen.world/paypaldonate)
+
 
 Headless bootstrap tooling for **Matomo**. Automates **first-time installation** and **API token provisioning** for fresh Matomo instances.
 ---
@@ -170,7 +172,7 @@ services:
     volumes:
       - matomo_data:/var/www/html
     healthcheck:
-      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1/ >/dev/null || exit 1"]
+      test: ["CMD-SHELL", "curl -fsS http://127.0.0.1/ >/dev/null || exit 1"]
       interval: 10s
       timeout: 5s
       retries: 60
@@ -207,10 +209,16 @@ services:
       MATOMO_TIMEZONE: "Germany - Berlin"
 
       # Optional stability knobs
-      MATOMO_TIMEOUT: "30"
+      MATOMO_TIMEOUT: "60"
       MATOMO_PLAYWRIGHT_HEADLESS: "1"
       MATOMO_PLAYWRIGHT_NAV_TIMEOUT_MS: "60000"
       MATOMO_PLAYWRIGHT_SLOWMO_MS: "0"
+      MATOMO_INSTALLER_READY_TIMEOUT_S: "240"
+      MATOMO_INSTALLER_STEP_TIMEOUT_S: "45"
+      MATOMO_INSTALLER_STEP_DEADLINE_S: "240"
+      MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S: "240"
+      MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S: "180"
+      MATOMO_INSTALLER_DEBUG_DIR: "/tmp/matomo-bootstrap"
 
     restart: "no"
 
@@ -267,6 +275,8 @@ matomo-bootstrap
 2. **Installation (if needed)**
 
    * uses a recorded Playwright flow to complete the Matomo web installer
+   * waits until installer controls are interactive before clicking next steps
+   * writes screenshot/HTML debug artifacts on installer failure
 3. **Authentication**
 
    * logs in using Matomo’s `Login.logme` controller (cookie session)

docker-compose.yml

@@ -34,7 +34,7 @@ services:
     volumes:
       - matomo_data:/var/www/html
     healthcheck:
-      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1/ >/dev/null || exit 1"]
+      test: ["CMD-SHELL", "curl -fsS http://127.0.0.1/ >/dev/null || exit 1"]
       interval: 10s
       timeout: 5s
       retries: 60
@@ -47,7 +47,7 @@ services:
     container_name: matomo-bootstrap
     depends_on:
       matomo:
-        condition: service_started
+        condition: service_healthy
     environment:
       MATOMO_URL: "http://matomo"
       MATOMO_ADMIN_USER: "administrator"
@@ -61,10 +61,16 @@ services:
       MATOMO_TIMEZONE: "Germany - Berlin"
 
       # Optional stability knobs
-      MATOMO_TIMEOUT: "30"
+      MATOMO_TIMEOUT: "60"
       MATOMO_PLAYWRIGHT_HEADLESS: "1"
       MATOMO_PLAYWRIGHT_NAV_TIMEOUT_MS: "60000"
       MATOMO_PLAYWRIGHT_SLOWMO_MS: "0"
+      MATOMO_INSTALLER_READY_TIMEOUT_S: "240"
+      MATOMO_INSTALLER_STEP_TIMEOUT_S: "45"
+      MATOMO_INSTALLER_STEP_DEADLINE_S: "240"
+      MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S: "240"
+      MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S: "180"
+      MATOMO_INSTALLER_DEBUG_DIR: "/tmp/matomo-bootstrap"
     # bootstrap is a one-shot command that prints the token and exits
     # if you want to re-run, do: docker compose run --rm bootstrap
     restart: "no"

env.sample

@@ -27,3 +27,11 @@ MATOMO_TIMEZONE=Germany - Berlin
 # MATOMO_PLAYWRIGHT_HEADLESS=1
 # MATOMO_PLAYWRIGHT_NAV_TIMEOUT_MS=60000
 # MATOMO_PLAYWRIGHT_SLOWMO_MS=0
+
+# Installer readiness / step guards
+# MATOMO_INSTALLER_READY_TIMEOUT_S=240
+# MATOMO_INSTALLER_STEP_TIMEOUT_S=45
+# MATOMO_INSTALLER_STEP_DEADLINE_S=240
+# MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S=240
+# MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S=180
+# MATOMO_INSTALLER_DEBUG_DIR=/tmp/matomo-bootstrap

flake.nix

@@ -20,7 +20,7 @@
       rec {
         matomo-bootstrap = python.pkgs.buildPythonApplication {
           pname = "matomo-bootstrap";
-          version = "1.1.1"; # keep in sync with pyproject.toml
+          version = "1.1.11"; # keep in sync with pyproject.toml
           pyproject = true;
           src = self;
 

pyproject.toml

@@ -4,12 +4,12 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "matomo-bootstrap"
-version = "1.1.1"
+version = "1.1.11"
 description = "Headless bootstrap tooling for Matomo (installation + API token provisioning)"
 readme = "README.md"
 requires-python = ">=3.10"
 authors = [{ name = "Kevin Veen-Birkenbach", email = "kevin@veen.world" }]
-license = { text = "MIT" }
+license = "MIT"
 urls = { Homepage = "https://github.com/kevinveenbirkenbach/matomo-bootstrap" }
 
 dependencies = ["playwright>=1.46.0,<2"]

src/matomo_bootstrap/installers/web.py

@@ -4,6 +4,7 @@ import os
 import sys
 import time
 import urllib.error
+import urllib.parse
 import urllib.request
 
 from .base import Installer
@@ -20,6 +21,22 @@ PLAYWRIGHT_SLOWMO_MS = int(os.environ.get("MATOMO_PLAYWRIGHT_SLOWMO_MS", "0"))
 PLAYWRIGHT_NAV_TIMEOUT_MS = int(
     os.environ.get("MATOMO_PLAYWRIGHT_NAV_TIMEOUT_MS", "60000")
 )
+INSTALLER_READY_TIMEOUT_S = int(
+    os.environ.get("MATOMO_INSTALLER_READY_TIMEOUT_S", "180")
+)
+INSTALLER_STEP_TIMEOUT_S = int(os.environ.get("MATOMO_INSTALLER_STEP_TIMEOUT_S", "30"))
+INSTALLER_STEP_DEADLINE_S = int(
+    os.environ.get("MATOMO_INSTALLER_STEP_DEADLINE_S", "180")
+)
+INSTALLER_TABLES_CREATION_TIMEOUT_S = int(
+    os.environ.get("MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S", "180")
+)
+INSTALLER_TABLES_ERASE_TIMEOUT_S = int(
+    os.environ.get("MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S", "120")
+)
+INSTALLER_DEBUG_DIR = os.environ.get(
+    "MATOMO_INSTALLER_DEBUG_DIR", "/tmp/matomo-bootstrap"
+).rstrip("/")
 
 # Values used by the installer flow (recorded)
 DEFAULT_SITE_NAME = os.environ.get("MATOMO_SITE_NAME", "localhost")
@@ -27,12 +44,602 @@ DEFAULT_SITE_URL = os.environ.get("MATOMO_SITE_URL", "http://localhost")
 DEFAULT_TIMEZONE = os.environ.get("MATOMO_TIMEZONE", "Germany - Berlin")
 DEFAULT_ECOMMERCE = os.environ.get("MATOMO_ECOMMERCE", "Ecommerce enabled")
 
+NEXT_BUTTON_CANDIDATES: list[tuple[str, str]] = [
+    ("link", "Next »"),
+    ("button", "Next »"),
+    ("link", "Next"),
+    ("button", "Next"),
+    ("link", "Continue"),
+    ("button", "Continue"),
+    ("link", "Proceed"),
+    ("button", "Proceed"),
+    ("link", "Start Installation"),
+    ("button", "Start Installation"),
+    ("link", "Weiter"),
+    ("button", "Weiter"),
+    ("link", "Fortfahren"),
+    ("button", "Fortfahren"),
+]
+
+CONTINUE_TO_MATOMO_CANDIDATES: list[tuple[str, str]] = [
+    ("button", "Continue to Matomo »"),
+    ("button", "Continue to Matomo"),
+    ("link", "Continue to Matomo »"),
+    ("link", "Continue to Matomo"),
+]
+
+SUPERUSER_LOGIN_SELECTORS = (
+    "#login-0",
+    "#login",
+    "input[name='login']",
+    "form#generalsetupform input[name='login']",
+)
+SUPERUSER_PASSWORD_SELECTORS = (
+    "#password-0",
+    "#password",
+    "input[name='password']",
+    "form#generalsetupform input[name='password']",
+)
+SUPERUSER_PASSWORD_REPEAT_SELECTORS = (
+    "#password_bis-0",
+    "#password_bis",
+    "input[name='password_bis']",
+    "form#generalsetupform input[name='password_bis']",
+)
+SUPERUSER_EMAIL_SELECTORS = (
+    "#email-0",
+    "#email",
+    "input[name='email']",
+    "form#generalsetupform input[name='email']",
+)
+SUPERUSER_SUBMIT_SELECTORS = (
+    "#submit-0",
+    "#submit",
+    "form#generalsetupform button[type='submit']",
+    "form#generalsetupform input[type='submit']",
+)
+FIRST_WEBSITE_NAME_SELECTORS = (
+    "#siteName-0",
+    "#siteName",
+    "input[name='siteName']",
+    "form#websitesetupform input[name='siteName']",
+)
+FIRST_WEBSITE_URL_SELECTORS = (
+    "#url-0",
+    "#url",
+    "input[name='url']",
+    "form#websitesetupform input[name='url']",
+)
+
 
 def _log(msg: str) -> None:
     # IMPORTANT: logs must not pollute stdout (tests expect only token on stdout)
     print(msg, file=sys.stderr)
 
 
+_TRANSIENT_NAVIGATION_ERROR_SNIPPETS = (
+    "Execution context was destroyed",
+    "most likely because of a navigation",
+    "Cannot find context with specified id",
+    "Frame was detached",
+)
+
+
+def _is_transient_navigation_error(exc: Exception) -> bool:
+    msg = str(exc)
+    return any(snippet in msg for snippet in _TRANSIENT_NAVIGATION_ERROR_SNIPPETS)
+
+
+def _count_locator(
+    locator, *, timeout_s: float = 2.0, retry_interval_s: float = 0.1
+) -> int:
+    deadline = time.time() + timeout_s
+    while True:
+        try:
+            return locator.count()
+        except Exception as exc:
+            if _is_transient_navigation_error(exc) and time.time() < deadline:
+                time.sleep(retry_interval_s)
+                continue
+            raise
+
+
+def _page_warnings(page, *, prefix: str = "[install]") -> list[str]:
+    """
+    Detect Matomo installer warnings/errors on the current page.
+
+    - Does NOT change any click logic.
+    - Prints found warnings/errors to stderr (stdout stays clean).
+    - Returns a de-duplicated list of warning/error texts (empty if none found).
+    """
+
+    def _safe(s: str | None) -> str:
+        return (s or "").strip()
+
+    # Helpful context (doesn't spam much, but makes failures traceable)
+    try:
+        url = page.url
+    except Exception:
+        url = "<unknown-url>"
+    try:
+        title = page.title()
+    except Exception:
+        title = "<unknown-title>"
+
+    selectors = [
+        # your originals
+        ".warning",
+        ".alert.alert-danger",
+        ".alert.alert-warning",
+        ".notification",
+        ".message_container",
+        # common Matomo / UI patterns seen across versions
+        "#notificationContainer",
+        ".system-check-error",
+        ".system-check-warning",
+        ".form-errors",
+        ".error",
+        ".errorMessage",
+        ".invalid-feedback",
+        ".help-block.error",
+        ".ui-state-error",
+        ".alert-danger",
+        ".alert-warning",
+        "[role='alert']",
+    ]
+
+    texts: list[str] = []
+
+    for sel in selectors:
+        loc = page.locator(sel)
+        try:
+            n = loc.count()
+        except Exception:
+            n = 0
+        if n <= 0:
+            continue
+
+        # collect all matches (not only .first)
+        for i in range(min(n, 50)):  # avoid insane spam if page is weird
+            try:
+                t = _safe(loc.nth(i).inner_text())
+            except Exception:
+                t = ""
+            if t:
+                texts.append(t)
+
+    # Also catch HTML5 validation bubbles / inline field errors
+    # (Sometimes Matomo marks invalid inputs with aria-invalid + sibling text)
+    try:
+        invalid = page.locator("[aria-invalid='true']")
+        n_invalid = invalid.count()
+    except Exception:
+        n_invalid = 0
+
+    if n_invalid > 0:
+        texts.append(f"{n_invalid} field(s) marked aria-invalid=true.")
+
+    # De-duplicate while preserving order
+    seen: set[str] = set()
+    out: list[str] = []
+    for t in texts:
+        if t not in seen:
+            seen.add(t)
+            out.append(t)
+
+    if out:
+        print(
+            f"{prefix} page warnings/errors detected @ {url} ({title}):",
+            file=sys.stderr,
+        )
+        for idx, t in enumerate(out, 1):
+            print(f"{prefix}  {idx}) {t}", file=sys.stderr)
+
+    return out
+
+
+def _wait_dom_settled(page) -> None:
+    try:
+        page.wait_for_load_state("domcontentloaded")
+    except Exception:
+        pass
+
+    try:
+        # Best effort: helps when the UI needs a bit more rendering time.
+        page.wait_for_load_state("networkidle", timeout=2_000)
+    except Exception:
+        pass
+
+    page.wait_for_timeout(250)
+
+
+def _get_step_hint(url: str) -> str:
+    try:
+        parsed = urllib.parse.urlparse(url)
+        qs = urllib.parse.parse_qs(parsed.query)
+        module = (qs.get("module") or [""])[0]
+        action = (qs.get("action") or [""])[0]
+        if module or action:
+            return f"{module}:{action}"
+        return parsed.path or url
+    except Exception:
+        return url
+
+
+def _safe_page_snapshot_name() -> str:
+    return time.strftime("%Y%m%d-%H%M%S")
+
+
+def _dump_failure_artifacts(page, reason: str) -> None:
+    os.makedirs(INSTALLER_DEBUG_DIR, exist_ok=True)
+    stamp = _safe_page_snapshot_name()
+    base = f"{INSTALLER_DEBUG_DIR}/installer-failure-{stamp}"
+    screenshot_path = f"{base}.png"
+    html_path = f"{base}.html"
+    meta_path = f"{base}.txt"
+
+    try:
+        page.screenshot(path=screenshot_path, full_page=True)
+    except Exception as exc:
+        _log(f"[install] Could not write screenshot: {exc}")
+        screenshot_path = "<unavailable>"
+
+    try:
+        html = page.content()
+        with open(html_path, "w", encoding="utf-8") as f:
+            f.write(html)
+    except Exception as exc:
+        _log(f"[install] Could not write HTML snapshot: {exc}")
+        html_path = "<unavailable>"
+
+    try:
+        url = page.url
+    except Exception:
+        url = "<unknown-url>"
+    try:
+        title = page.title()
+    except Exception:
+        title = "<unknown-title>"
+
+    try:
+        with open(meta_path, "w", encoding="utf-8") as f:
+            f.write(f"reason: {reason}\n")
+            f.write(f"url: {url}\n")
+            f.write(f"title: {title}\n")
+            f.write(f"step_hint: {_get_step_hint(url)}\n")
+    except Exception as exc:
+        _log(f"[install] Could not write metadata snapshot: {exc}")
+        meta_path = "<unavailable>"
+
+    _log("[install] Debug artifacts written:")
+    _log(f"[install]   screenshot: {screenshot_path}")
+    _log(f"[install]   html: {html_path}")
+    _log(f"[install]   meta: {meta_path}")
+
+
+def _first_next_locator(page):
+    for role, name in NEXT_BUTTON_CANDIDATES:
+        loc = page.get_by_role(role, name=name)
+        try:
+            if _count_locator(loc) > 0 and loc.first.is_visible():
+                return loc.first, f"{role}:{name}"
+        except Exception:
+            continue
+
+    text_loc = page.get_by_text("Next", exact=False)
+    try:
+        if _count_locator(text_loc) > 0 and text_loc.first.is_visible():
+            return text_loc.first, "text:Next*"
+    except Exception:
+        pass
+
+    return None, ""
+
+
+def _first_present_css_locator(page, selectors, *, timeout_s: float = 0.2):
+    for selector in selectors:
+        loc = page.locator(selector)
+        try:
+            if _count_locator(loc, timeout_s=timeout_s) > 0:
+                return loc.first, f"css:{selector}"
+        except Exception:
+            continue
+    return None, ""
+
+
+def _first_continue_to_matomo_locator(page, *, timeout_s: float = 0.2):
+    for role, name in CONTINUE_TO_MATOMO_CANDIDATES:
+        loc = page.get_by_role(role, name=name)
+        try:
+            if _count_locator(loc, timeout_s=timeout_s) > 0 and loc.first.is_visible():
+                return loc.first, f"{role}:{name}"
+        except Exception:
+            continue
+
+    text_loc = page.get_by_text("Continue to Matomo", exact=False)
+    try:
+        if (
+            _count_locator(text_loc, timeout_s=timeout_s) > 0
+            and text_loc.first.is_visible()
+        ):
+            return text_loc.first, "text:Continue to Matomo*"
+    except Exception:
+        pass
+
+    return None, ""
+
+
+def _has_superuser_login_field(page, *, timeout_s: float = 0.2) -> bool:
+    loc, _ = _first_present_css_locator(
+        page, SUPERUSER_LOGIN_SELECTORS, timeout_s=timeout_s
+    )
+    return loc is not None
+
+
+def _has_first_website_name_field(page, *, timeout_s: float = 0.2) -> bool:
+    loc, _ = _first_present_css_locator(
+        page, FIRST_WEBSITE_NAME_SELECTORS, timeout_s=timeout_s
+    )
+    return loc is not None
+
+
+def _has_continue_to_matomo_action(page, *, timeout_s: float = 0.2) -> bool:
+    loc, _ = _first_continue_to_matomo_locator(page, timeout_s=timeout_s)
+    return loc is not None
+
+
+def _fill_required_input(page, selectors, value: str, *, label: str) -> None:
+    loc, _ = _first_present_css_locator(page, selectors, timeout_s=1.0)
+    if loc is None:
+        raise RuntimeError(
+            f"Could not locate required installer field '{label}' "
+            f"(url={page.url}, step={_get_step_hint(page.url)})."
+        )
+    try:
+        loc.click(timeout=2_000)
+    except Exception:
+        pass
+    loc.fill(value)
+
+
+def _fill_optional_input(page, selectors, value: str) -> bool:
+    loc, _ = _first_present_css_locator(page, selectors, timeout_s=0.5)
+    if loc is None:
+        return False
+    try:
+        loc.click(timeout=2_000)
+    except Exception:
+        pass
+    loc.fill(value)
+    return True
+
+
+def _installer_interactive(page) -> bool:
+    checks = [
+        _has_superuser_login_field(page),
+        _has_first_website_name_field(page),
+        _has_continue_to_matomo_action(page),
+    ]
+    loc, _ = _first_next_locator(page)
+    return any(checks) or loc is not None
+
+
+def _wait_for_installer_interactive(page, *, timeout_s: int) -> None:
+    _log(f"[install] Waiting for interactive installer UI (timeout={timeout_s}s)...")
+    deadline = time.time() + timeout_s
+    while time.time() < deadline:
+        _wait_dom_settled(page)
+        if _installer_interactive(page):
+            _log("[install] Installer UI looks interactive.")
+            return
+        page.wait_for_timeout(300)
+
+    raise RuntimeError(
+        f"Installer UI did not become interactive within {timeout_s}s "
+        f"(url={page.url}, step={_get_step_hint(page.url)})."
+    )
+
+
+def _click_next_with_wait(page, *, timeout_s: int) -> str:
+    before_url = page.url
+    before_step = _get_step_hint(before_url)
+    last_warning_log_at = 0.0
+    deadline = time.time() + timeout_s
+    while time.time() < deadline:
+        loc, label = _first_next_locator(page)
+        if loc is not None:
+            try:
+                loc.click(timeout=2_000)
+            except Exception:
+                page.wait_for_timeout(250)
+                continue
+            _wait_dom_settled(page)
+            after_url = page.url
+            after_step = _get_step_hint(after_url)
+            _log(
+                f"[install] Clicked {label}; step {before_step} -> {after_step} "
+                f"(url {before_url} -> {after_url})"
+            )
+            return after_step
+
+        _wait_dom_settled(page)
+        current_url = page.url
+        current_step = _get_step_hint(current_url)
+        if current_url != before_url or current_step != before_step:
+            _log(
+                "[install] Installer progressed without explicit click; "
+                f"step {before_step} -> {current_step} "
+                f"(url {before_url} -> {current_url})"
+            )
+            return current_step
+
+        # Some installer transitions render the next form asynchronously without
+        # exposing another "Next" control yet. Treat this as progress.
+        if _has_superuser_login_field(page, timeout_s=0.2):
+            _log(
+                "[install] Superuser form became available without explicit click; "
+                f"staying on step {current_step} (url {current_url})"
+            )
+            return current_step
+        if _has_first_website_name_field(page, timeout_s=0.2):
+            _log(
+                "[install] First website form became available without explicit click; "
+                f"staying on step {current_step} (url {current_url})"
+            )
+            return current_step
+        if _has_continue_to_matomo_action(page, timeout_s=0.2):
+            _log(
+                "[install] Continue-to-Matomo action is available without explicit click; "
+                f"staying on step {current_step} (url {current_url})"
+            )
+            return current_step
+
+        now = time.time()
+        if now - last_warning_log_at >= 5:
+            _page_warnings(page)
+            last_warning_log_at = now
+
+        page.wait_for_timeout(300)
+
+    raise RuntimeError(
+        "Could not find a Next/Continue control in the installer UI "
+        f"within {timeout_s}s (url={page.url}, step={_get_step_hint(page.url)})."
+    )
+
+
+def _first_erase_tables_locator(page):
+    css_loc = page.locator("#eraseAllTables")
+    try:
+        if _count_locator(css_loc) > 0:
+            return css_loc.first, "css:#eraseAllTables"
+    except Exception:
+        pass
+
+    for role, name in [
+        ("link", "Delete the detected tables »"),
+        ("button", "Delete the detected tables »"),
+        ("link", "Delete the detected tables"),
+        ("button", "Delete the detected tables"),
+    ]:
+        loc = page.get_by_role(role, name=name)
+        try:
+            if _count_locator(loc) > 0:
+                return loc.first, f"{role}:{name}"
+        except Exception:
+            continue
+
+    text_loc = page.get_by_text("Delete the detected tables", exact=False)
+    try:
+        if _count_locator(text_loc) > 0:
+            return text_loc.first, "text:Delete the detected tables*"
+    except Exception:
+        pass
+
+    return None, ""
+
+
+def _resolve_tables_creation_conflict(page, *, timeout_s: int) -> bool:
+    before_url = page.url
+    before_step = _get_step_hint(before_url)
+    if "tablesCreation" not in before_step:
+        return False
+
+    loc, label = _first_erase_tables_locator(page)
+    if loc is None:
+        return False
+
+    _log(
+        "[install] Detected existing tables during tablesCreation. "
+        f"Trying cleanup via {label}."
+    )
+
+    def _cleanup_url() -> str | None:
+        try:
+            href = page.locator("#eraseAllTables").first.get_attribute("href")
+            if href:
+                return urllib.parse.urljoin(page.url, href)
+        except Exception:
+            pass
+
+        try:
+            parsed = urllib.parse.urlparse(page.url)
+            qs = urllib.parse.parse_qs(parsed.query, keep_blank_values=True)
+            if (qs.get("action") or [""])[0] != "tablesCreation":
+                return None
+            qs["deleteTables"] = ["1"]
+            return urllib.parse.urlunparse(
+                parsed._replace(query=urllib.parse.urlencode(qs, doseq=True))
+            )
+        except Exception:
+            return None
+
+    deadline = time.time() + timeout_s
+    while time.time() < deadline:
+        accepted_dialog = False
+
+        def _accept_dialog(dialog) -> None:
+            nonlocal accepted_dialog
+            accepted_dialog = True
+            try:
+                _log(f"[install] Accepting installer dialog: {dialog.message}")
+            except Exception:
+                _log("[install] Accepting installer dialog.")
+            try:
+                dialog.accept()
+            except Exception:
+                pass
+
+        page.on("dialog", _accept_dialog)
+        try:
+            loc.click(timeout=2_000, force=True)
+            _wait_dom_settled(page)
+        except Exception as exc:
+            _log(f"[install] Cleanup click via {label} failed: {exc}")
+            cleanup_url = _cleanup_url()
+            if cleanup_url:
+                try:
+                    page.goto(cleanup_url, wait_until="domcontentloaded")
+                    _wait_dom_settled(page)
+                    _log(
+                        "[install] Triggered existing-table cleanup via URL fallback: "
+                        f"{cleanup_url}"
+                    )
+                except Exception as nav_exc:
+                    _log(
+                        "[install] Cleanup URL fallback failed: "
+                        f"{cleanup_url} ({nav_exc})"
+                    )
+        finally:
+            page.remove_listener("dialog", _accept_dialog)
+
+        if accepted_dialog:
+            _log("[install] Existing-table cleanup dialog accepted.")
+
+        _wait_dom_settled(page)
+        current_url = page.url
+        current_step = _get_step_hint(current_url)
+        if current_url != before_url or current_step != before_step:
+            _log(
+                "[install] Existing-table cleanup progressed installer; "
+                f"step {before_step} -> {current_step} "
+                f"(url {before_url} -> {current_url})"
+            )
+            return True
+
+        remaining_loc, _ = _first_erase_tables_locator(page)
+        if remaining_loc is None:
+            _log("[install] Existing-table cleanup control is gone.")
+            return True
+
+        loc = remaining_loc
+        page.wait_for_timeout(500)
+
+    raise RuntimeError(
+        "Detected existing Matomo tables but cleanup did not complete "
+        f"within {timeout_s}s (url={page.url}, step={_get_step_hint(page.url)})."
+    )
+
+
 def wait_http(url: str, timeout: int = 180) -> None:
     """
     Consider Matomo 'reachable' as soon as the HTTP server answers - even with 500.
@@ -102,7 +709,6 @@ class WebInstaller(Installer):
         wait_http(base_url)
 
         if is_installed(base_url):
-            if config.debug:
             _log("[install] Matomo already looks installed. Skipping installer.")
             return
 
@@ -120,117 +726,263 @@ class WebInstaller(Installer):
             page.set_default_navigation_timeout(PLAYWRIGHT_NAV_TIMEOUT_MS)
             page.set_default_timeout(PLAYWRIGHT_NAV_TIMEOUT_MS)
 
-            def _dbg(msg: str) -> None:
-                if config.debug:
-                    _log(f"[install] {msg}")
-
-            def click_next() -> None:
-                """
-                Matomo installer mixes link/button variants and sometimes includes '»'.
-                We try common variants in a robust order.
-                """
-                candidates = [
-                    ("link", "Next »"),
-                    ("button", "Next »"),
-                    ("link", "Next"),
-                    ("button", "Next"),
-                    ("link", "Continue"),
-                    ("button", "Continue"),
-                    ("link", "Proceed"),
-                    ("button", "Proceed"),
-                    ("link", "Start Installation"),
-                    ("button", "Start Installation"),
-                    ("link", "Weiter"),
-                    ("button", "Weiter"),
-                    ("link", "Fortfahren"),
-                    ("button", "Fortfahren"),
-                ]
-
-                for role, name in candidates:
-                    loc = page.get_by_role(role, name=name)
-                    if loc.count() > 0:
-                        _dbg(f"click_next(): {role} '{name}'")
-                        loc.first.click()
-                        return
-
-                loc = page.get_by_text("Next", exact=False)
-                if loc.count() > 0:
-                    _dbg("click_next(): fallback text 'Next'")
-                    loc.first.click()
-                    return
-
-                raise RuntimeError(
-                    "Could not find a Next/Continue control in the installer UI."
-                )
-
+            try:
                 page.goto(base_url, wait_until="domcontentloaded")
+                _wait_for_installer_interactive(
+                    page, timeout_s=INSTALLER_READY_TIMEOUT_S
+                )
+                _page_warnings(page)
 
-            def superuser_form_visible() -> bool:
-                return page.locator("#login-0").count() > 0
+                progress_deadline = time.time() + INSTALLER_STEP_DEADLINE_S
 
-            for _ in range(12):
-                if superuser_form_visible():
-                    break
-                click_next()
-                page.wait_for_load_state("domcontentloaded")
-                page.wait_for_timeout(200)
-            else:
+                while not _has_superuser_login_field(page):
+                    if time.time() >= progress_deadline:
                         raise RuntimeError(
-                    "Installer did not reach superuser step (login-0 not found)."
+                            "Installer did not reach superuser step "
+                            f"within {INSTALLER_STEP_DEADLINE_S}s "
+                            f"(url={page.url}, step={_get_step_hint(page.url)})."
+                        )
+                    if _resolve_tables_creation_conflict(
+                        page, timeout_s=INSTALLER_TABLES_ERASE_TIMEOUT_S
+                    ):
+                        _page_warnings(page)
+                        continue
+                    step_timeout = INSTALLER_STEP_TIMEOUT_S
+                    if "tablesCreation" in _get_step_hint(page.url):
+                        step_timeout = max(
+                            step_timeout, INSTALLER_TABLES_CREATION_TIMEOUT_S
+                        )
+                    _click_next_with_wait(page, timeout_s=step_timeout)
+                    _page_warnings(page)
+
+                _fill_required_input(
+                    page,
+                    SUPERUSER_LOGIN_SELECTORS,
+                    config.admin_user,
+                    label="superuser login",
+                )
+                _fill_required_input(
+                    page,
+                    SUPERUSER_PASSWORD_SELECTORS,
+                    config.admin_password,
+                    label="superuser password",
+                )
+                _fill_optional_input(
+                    page, SUPERUSER_PASSWORD_REPEAT_SELECTORS, config.admin_password
+                )
+                _fill_required_input(
+                    page,
+                    SUPERUSER_EMAIL_SELECTORS,
+                    config.admin_email,
+                    label="superuser email",
+                )
+                _page_warnings(page)
+
+                submitted_superuser = False
+                try:
+                    submitted_superuser = bool(
+                        page.evaluate(
+                            """
+                            ([user, password, email]) => {
+                                const form = document.querySelector("form#generalsetupform");
+                                if (!form) return false;
+
+                                const loginInput = form.querySelector("input[name='login']");
+                                const passwordInput = form.querySelector("input[name='password']");
+                                const repeatPasswordInput = form.querySelector("input[name='password_bis']");
+                                const emailInput = form.querySelector("input[name='email']");
+                                if (!loginInput || !passwordInput || !emailInput) return false;
+
+                                loginInput.value = user;
+                                passwordInput.value = password;
+                                if (repeatPasswordInput) {
+                                    repeatPasswordInput.value = password;
+                                }
+                                emailInput.value = email;
+
+                                if (typeof form.requestSubmit === "function") {
+                                    form.requestSubmit();
+                                } else {
+                                    form.submit();
+                                }
+                                return true;
+                            }
+                            """,
+                            [
+                                config.admin_user,
+                                config.admin_password,
+                                config.admin_email,
+                            ],
+                        )
+                    )
+                except Exception:
+                    submitted_superuser = False
+
+                if submitted_superuser:
+                    _wait_dom_settled(page)
+                    _log("[install] Submitted superuser form via form.requestSubmit().")
+                else:
+                    submit_loc, submit_label = _first_present_css_locator(
+                        page, SUPERUSER_SUBMIT_SELECTORS, timeout_s=0.5
+                    )
+                    if submit_loc is not None:
+                        submit_loc.click(timeout=2_000)
+                        _wait_dom_settled(page)
+                        _log(
+                            "[install] Submitted superuser form via "
+                            f"{submit_label} fallback."
+                        )
+                    else:
+                        _click_next_with_wait(page, timeout_s=INSTALLER_STEP_TIMEOUT_S)
+
+                superuser_progress_deadline = time.time() + INSTALLER_STEP_TIMEOUT_S
+                while time.time() < superuser_progress_deadline:
+                    _wait_dom_settled(page)
+                    if not _has_superuser_login_field(page):
+                        break
+                    page.wait_for_timeout(300)
+                if _has_superuser_login_field(page):
+                    _page_warnings(page)
+                    raise RuntimeError(
+                        "Superuser form submit did not progress to first website setup "
+                        f"within {INSTALLER_STEP_TIMEOUT_S}s "
+                        f"(url={page.url}, step={_get_step_hint(page.url)})."
                     )
 
-            page.locator("#login-0").click()
-            page.locator("#login-0").fill(config.admin_user)
+                _page_warnings(page)
 
-            page.locator("#password-0").click()
-            page.locator("#password-0").fill(config.admin_password)
+                submitted_first_website = False
+                try:
+                    submitted_first_website = bool(
+                        page.evaluate(
+                            """
+                            ([siteName, siteUrl, timezoneLabel, ecommerceLabel]) => {
+                                const form = document.querySelector("form#websitesetupform");
+                                if (!form) return false;
 
-            if page.locator("#password_bis-0").count() > 0:
-                page.locator("#password_bis-0").click()
-                page.locator("#password_bis-0").fill(config.admin_password)
+                                const siteNameInput = form.querySelector("input[name='siteName']");
+                                const siteUrlInput = form.querySelector("input[name='url']");
+                                if (!siteNameInput || !siteUrlInput) return false;
 
-            page.locator("#email-0").click()
-            page.locator("#email-0").fill(config.admin_email)
+                                siteNameInput.value = siteName;
+                                siteUrlInput.value = siteUrl;
 
-            if page.get_by_role("button", name="Next »").count() > 0:
-                page.get_by_role("button", name="Next »").click()
+                                const timezoneSelect = form.querySelector("select[name='timezone']");
+                                if (timezoneSelect) {
+                                    const timezoneOption = Array.from(timezoneSelect.options).find(
+                                        (opt) => (opt.textContent || "").trim() === timezoneLabel
+                                    );
+                                    if (timezoneOption) {
+                                        timezoneSelect.value = timezoneOption.value;
+                                    }
+                                }
+
+                                const ecommerceSelect = form.querySelector("select[name='ecommerce']");
+                                if (ecommerceSelect) {
+                                    const ecommerceOption = Array.from(ecommerceSelect.options).find(
+                                        (opt) => (opt.textContent || "").trim() === ecommerceLabel
+                                    );
+                                    if (ecommerceOption) {
+                                        ecommerceSelect.value = ecommerceOption.value;
+                                    }
+                                }
+
+                                if (typeof form.requestSubmit === "function") {
+                                    form.requestSubmit();
+                                } else {
+                                    form.submit();
+                                }
+                                return true;
+                            }
+                            """,
+                            [
+                                DEFAULT_SITE_NAME,
+                                DEFAULT_SITE_URL,
+                                DEFAULT_TIMEZONE,
+                                DEFAULT_ECOMMERCE,
+                            ],
+                        )
+                    )
+                except Exception:
+                    submitted_first_website = False
+
+                if submitted_first_website:
+                    _wait_dom_settled(page)
+                    _log(
+                        "[install] Submitted first website form via form.requestSubmit()."
+                    )
                 else:
-                click_next()
+                    _fill_optional_input(
+                        page, FIRST_WEBSITE_NAME_SELECTORS, DEFAULT_SITE_NAME
+                    )
+                    _fill_optional_input(
+                        page, FIRST_WEBSITE_URL_SELECTORS, DEFAULT_SITE_URL
+                    )
 
-            if page.locator("#siteName-0").count() > 0:
-                page.locator("#siteName-0").click()
-                page.locator("#siteName-0").fill(DEFAULT_SITE_NAME)
-
-            if page.locator("#url-0").count() > 0:
-                page.locator("#url-0").click()
-                page.locator("#url-0").fill(DEFAULT_SITE_URL)
+                    _page_warnings(page)
 
                     try:
-                page.get_by_role("combobox").first.click()
-                page.get_by_role("listbox").get_by_text(DEFAULT_TIMEZONE).click()
+                        comboboxes = page.get_by_role("combobox")
+                        if _count_locator(comboboxes) > 0:
+                            comboboxes.first.click(timeout=2_000)
+                            page.get_by_role("listbox").get_by_text(
+                                DEFAULT_TIMEZONE
+                            ).click(timeout=2_000)
                     except Exception:
-                _dbg("Timezone selection skipped (not found / changed UI).")
+                        _log("Timezone selection skipped (not found / changed UI).")
 
                     try:
-                page.get_by_role("combobox").nth(2).click()
-                page.get_by_role("listbox").get_by_text(DEFAULT_ECOMMERCE).click()
+                        comboboxes = page.get_by_role("combobox")
+                        if _count_locator(comboboxes) > 2:
+                            comboboxes.nth(2).click(timeout=2_000)
+                            page.get_by_role("listbox").get_by_text(
+                                DEFAULT_ECOMMERCE
+                            ).click(timeout=2_000)
                     except Exception:
-                _dbg("Ecommerce selection skipped (not found / changed UI).")
+                        _log("Ecommerce selection skipped (not found / changed UI).")
 
-            click_next()
-            page.wait_for_load_state("domcontentloaded")
+                    _page_warnings(page)
 
-            if page.get_by_role("link", name="Next »").count() > 0:
+                    _click_next_with_wait(page, timeout_s=INSTALLER_STEP_TIMEOUT_S)
+
+                first_website_progress_deadline = time.time() + INSTALLER_STEP_TIMEOUT_S
+                while time.time() < first_website_progress_deadline:
+                    _wait_dom_settled(page)
+                    if not _has_first_website_name_field(page):
+                        break
+                    page.wait_for_timeout(300)
+                if _has_first_website_name_field(page):
+                    _page_warnings(page)
+                    raise RuntimeError(
+                        "First website form submit did not progress to tracking code "
+                        f"within {INSTALLER_STEP_TIMEOUT_S}s "
+                        f"(url={page.url}, step={_get_step_hint(page.url)})."
+                    )
+
+                _page_warnings(page)
+
+                if _count_locator(page.get_by_role("link", name="Next »")) > 0:
                     page.get_by_role("link", name="Next »").click()
+                    _wait_dom_settled(page)
+                    _page_warnings(page)
 
-            if page.get_by_role("button", name="Continue to Matomo »").count() > 0:
-                page.get_by_role("button", name="Continue to Matomo »").click()
+                continue_loc, _ = _first_continue_to_matomo_locator(page)
+                if continue_loc is not None:
+                    continue_loc.click()
+                    _wait_dom_settled(page)
+                    _page_warnings(page)
 
+                page.wait_for_timeout(1_000)
+                if not is_installed(base_url):
+                    _page_warnings(page)
+                    raise RuntimeError(
+                        "[install] Installer did not reach installed state."
+                    )
+            except Exception as exc:
+                _dump_failure_artifacts(page, reason=str(exc))
+                raise
+            finally:
                 context.close()
                 browser.close()
 
-        time.sleep(1)
-        if not is_installed(base_url):
-            raise RuntimeError("[install] Installer did not reach installed state.")
-
         _log("[install] Installation finished.")

tests/e2e/test_bootstrap_nix.py

@@ -1,5 +1,7 @@
 import os
+import re
 import subprocess
+import textwrap
 import unittest
 
 
@@ -7,14 +9,24 @@ MATOMO_URL = os.environ.get("MATOMO_URL", "http://127.0.0.1:8080")
 ADMIN_USER = os.environ.get("MATOMO_ADMIN_USER", "administrator")
 ADMIN_PASSWORD = os.environ.get("MATOMO_ADMIN_PASSWORD", "AdminSecret123!")
 ADMIN_EMAIL = os.environ.get("MATOMO_ADMIN_EMAIL", "administrator@example.org")
+TOKEN_RE = re.compile(r"^[a-f0-9]{32,64}$")
 
 
 class TestMatomoBootstrapE2ENix(unittest.TestCase):
     def test_bootstrap_creates_api_token_via_nix(self) -> None:
-        script = f"""set -euo pipefail
+        script = textwrap.dedent(
+            f"""\
+set -eux
 
 export NIX_CONFIG='experimental-features = nix-command flakes'
 export TERM='xterm'
+# Improve CI resilience for slow installer pages.
+export MATOMO_INSTALLER_READY_TIMEOUT_S="${{MATOMO_INSTALLER_READY_TIMEOUT_S:-240}}"
+export MATOMO_INSTALLER_STEP_TIMEOUT_S="${{MATOMO_INSTALLER_STEP_TIMEOUT_S:-45}}"
+export MATOMO_INSTALLER_STEP_DEADLINE_S="${{MATOMO_INSTALLER_STEP_DEADLINE_S:-240}}"
+export MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S="${{MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S:-240}}"
+export MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S="${{MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S:-180}}"
+export MATOMO_INSTALLER_DEBUG_DIR="${{MATOMO_INSTALLER_DEBUG_DIR:-/tmp/matomo-bootstrap}}"
 
 # Make sure we have a writable HOME (compose already sets HOME=/tmp/home)
 mkdir -p "$HOME" "$HOME/.cache" "$HOME/.config" "$HOME/.local/share"
@@ -25,6 +37,16 @@ mkdir -p "$HOME" "$HOME/.cache" "$HOME/.config" "$HOME/.local/share"
 # Mark it as safe explicitly.
 git config --global --add safe.directory /work
 
+# Preflight checks to surface "command not executable" failures (exit 126) clearly.
+playwright_app="$(nix eval --raw .#apps.x86_64-linux.matomo-bootstrap-playwright-install.program)"
+bootstrap_app="$(nix eval --raw .#apps.x86_64-linux.matomo-bootstrap.program)"
+if [ -e "$playwright_app" ]; then
+  test -x "$playwright_app"
+fi
+if [ -e "$bootstrap_app" ]; then
+  test -x "$bootstrap_app"
+fi
+
 # 1) Install Playwright Chromium (cached in the container environment)
 nix run --no-write-lock-file -L .#matomo-bootstrap-playwright-install
 
@@ -36,13 +58,18 @@ nix run --no-write-lock-file -L .#matomo-bootstrap -- \\
   --admin-email '{ADMIN_EMAIL}' \\
   --token-description 'e2e-test-token-nix'
 """
+        )
 
         cmd = [
             "docker",
             "compose",
             "-f",
             "tests/e2e/docker-compose.yml",
-            "exec",
+            # Use `run` instead of `exec` to avoid runtime-specific
+            # `/etc/group` lookup issues seen with nix image + compose exec.
+            "run",
+            "--rm",
+            "--no-deps",
             "-T",
             "nix",
             "sh",
@@ -50,8 +77,30 @@ nix run --no-write-lock-file -L .#matomo-bootstrap -- \\
             script,
         ]
 
-        token = subprocess.check_output(cmd).decode().strip()
-        self.assertRegex(token, r"^[a-f0-9]{32,64}$")
+        result = subprocess.run(
+            cmd,
+            check=False,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            text=True,
+        )
+        if result.returncode != 0:
+            self.fail(
+                "nix bootstrap command failed\n"
+                f"exit={result.returncode}\n"
+                f"stdout:\n{result.stdout}\n"
+                f"stderr:\n{result.stderr}"
+            )
+
+        stdout_lines = [
+            line.strip() for line in result.stdout.splitlines() if line.strip()
+        ]
+        token = stdout_lines[-1] if stdout_lines else ""
+        self.assertRegex(
+            token,
+            TOKEN_RE,
+            f"Expected token on last stdout line, got stdout={result.stdout!r}",
+        )
 
 
 if __name__ == "__main__":

tests/e2e/test_docker_compose_stack.py

@@ -56,6 +56,29 @@ def _wait_for_http_any_status(url: str, timeout_s: int) -> None:
     raise RuntimeError(f"Matomo did not become reachable at {url} ({last_exc})")
 
 
+def _extract_service_block(compose_config: str, service_name: str) -> str:
+    lines = compose_config.splitlines()
+    marker = f"  {service_name}:"
+    start = -1
+    for idx, line in enumerate(lines):
+        if line == marker:
+            start = idx
+            break
+    if start < 0:
+        raise AssertionError(
+            f"service block not found in compose config: {service_name}"
+        )
+
+    end = len(lines)
+    for idx in range(start + 1, len(lines)):
+        line = lines[idx]
+        if line.startswith("  ") and not line.startswith("    "):
+            end = idx
+            break
+
+    return "\n".join(lines[start:end])
+
+
 class TestRootDockerComposeStack(unittest.TestCase):
     """
     E2E test for repository root docker-compose.yml:
@@ -89,28 +112,65 @@ class TestRootDockerComposeStack(unittest.TestCase):
         # Build bootstrap image from Dockerfile (as defined in docker-compose.yml)
         build = _run(
             _compose_cmd("build", "bootstrap"),
-            check=True,
+            check=False,
             extra_env={"MATOMO_PORT": MATOMO_PORT},
         )
-        self.assertEqual(build.returncode, 0, build.stderr)
+        self.assertEqual(
+            build.returncode,
+            0,
+            f"compose build failed\nstdout:\n{build.stdout}\nstderr:\n{build.stderr}",
+        )
 
         # Start db + matomo (bootstrap is one-shot and started via "run")
         up = _run(
             _compose_cmd("up", "-d", "db", "matomo"),
-            check=True,
+            check=False,
             extra_env={"MATOMO_PORT": MATOMO_PORT},
         )
-        self.assertEqual(up.returncode, 0, up.stderr)
+        self.assertEqual(
+            up.returncode,
+            0,
+            f"compose up failed\nstdout:\n{up.stdout}\nstderr:\n{up.stderr}",
+        )
 
         # Wait until Matomo answers on the published port
         _wait_for_http_any_status(MATOMO_HOST_URL + "/", WAIT_TIMEOUT_SECONDS)
 
-        # Run bootstrap: it should print ONLY the token to stdout
+        # Run bootstrap: it should print ONLY the token to stdout.
+        # Retry once because first-run installer startup can be flaky on slow CI.
+        boot_attempts: list[subprocess.CompletedProcess] = []
+        for _ in range(2):
             boot = _run(
                 _compose_cmd("run", "--rm", "bootstrap"),
-            check=True,
+                check=False,
                 extra_env={"MATOMO_PORT": MATOMO_PORT},
             )
+            boot_attempts.append(boot)
+            if boot.returncode == 0:
+                break
+            time.sleep(5)
+
+        if boot.returncode != 0:
+            matomo_logs = _run(
+                _compose_cmd("logs", "--no-color", "--tail=200", "matomo"),
+                check=False,
+                extra_env={"MATOMO_PORT": MATOMO_PORT},
+            )
+            attempts_dump = "\n\n".join(
+                [
+                    (
+                        f"[attempt {i}] rc={attempt.returncode}\n"
+                        f"stdout:\n{attempt.stdout}\n"
+                        f"stderr:\n{attempt.stderr}"
+                    )
+                    for i, attempt in enumerate(boot_attempts, 1)
+                ]
+            )
+            self.fail(
+                "bootstrap container failed after retry.\n"
+                f"{attempts_dump}\n\n"
+                f"[matomo logs]\n{matomo_logs.stdout}\n{matomo_logs.stderr}"
+            )
 
         token = (boot.stdout or "").strip()
         self.assertRegex(
@@ -131,5 +191,32 @@ class TestRootDockerComposeStack(unittest.TestCase):
         self.assertIsInstance(data, list)
 
 
+class TestRootDockerComposeDefinition(unittest.TestCase):
+    def test_bootstrap_service_waits_for_healthy_matomo_and_has_readiness_knobs(
+        self,
+    ) -> None:
+        cfg = _run(
+            _compose_cmd("config"),
+            check=True,
+            extra_env={"MATOMO_PORT": MATOMO_PORT},
+        )
+        self.assertEqual(cfg.returncode, 0, cfg.stderr)
+
+        bootstrap_block = _extract_service_block(cfg.stdout, "bootstrap")
+
+        self.assertIn("depends_on:", bootstrap_block)
+        self.assertIn("matomo:", bootstrap_block)
+        self.assertIn("condition: service_healthy", bootstrap_block)
+        self.assertIn("MATOMO_INSTALLER_READY_TIMEOUT_S:", bootstrap_block)
+        self.assertIn("MATOMO_INSTALLER_STEP_TIMEOUT_S:", bootstrap_block)
+        self.assertIn("MATOMO_INSTALLER_STEP_DEADLINE_S:", bootstrap_block)
+        self.assertIn("MATOMO_INSTALLER_TABLES_CREATION_TIMEOUT_S:", bootstrap_block)
+        self.assertIn("MATOMO_INSTALLER_TABLES_ERASE_TIMEOUT_S:", bootstrap_block)
+
+        matomo_block = _extract_service_block(cfg.stdout, "matomo")
+        self.assertIn("healthcheck:", matomo_block)
+        self.assertIn("curl -fsS http://127.0.0.1/ >/dev/null || exit 1", matomo_block)
+
+
 if __name__ == "__main__":
     unittest.main()

tests/integration/test_web_installer_locator_count.py

@@ -0,0 +1,173 @@
+import unittest
+
+from matomo_bootstrap.installers.web import _click_next_with_wait, _count_locator
+
+
+class _FlakyLocator:
+    def __init__(self, outcomes):
+        self._outcomes = list(outcomes)
+        self.calls = 0
+
+    def count(self) -> int:
+        self.calls += 1
+        outcome = self._outcomes.pop(0)
+        if isinstance(outcome, Exception):
+            raise outcome
+        return int(outcome)
+
+
+class _StaticLocator:
+    def __init__(self, page, selector: str):
+        self._page = page
+        self._selector = selector
+
+    def count(self) -> int:
+        if self._selector == "#login-0":
+            return 1 if self._page.login_visible else 0
+        if self._selector == "#siteName-0":
+            return 0
+        return 0
+
+    @property
+    def first(self):
+        return self
+
+    def is_visible(self) -> bool:
+        return self.count() > 0
+
+
+class _RoleLocator:
+    def __init__(self, count_value: int):
+        self._count_value = count_value
+
+    def count(self) -> int:
+        return self._count_value
+
+    @property
+    def first(self):
+        return self
+
+    def is_visible(self) -> bool:
+        return self._count_value > 0
+
+
+class _NameOnlyStaticLocator:
+    def __init__(self, page, selector: str):
+        self._page = page
+        self._selector = selector
+
+    def count(self) -> int:
+        if self._selector == "input[name='login']":
+            return 1 if self._page.login_visible else 0
+        if self._selector == "input[name='siteName']":
+            return 0
+        return 0
+
+    @property
+    def first(self):
+        return self
+
+    def is_visible(self) -> bool:
+        return self.count() > 0
+
+
+class _NoNextButLoginAppearsPage:
+    def __init__(self):
+        self.url = "http://matomo/index.php?action=setupSuperUser&module=Installation"
+        self.login_visible = False
+        self._wait_calls = 0
+
+    def locator(self, selector: str):
+        return _StaticLocator(self, selector)
+
+    def get_by_role(self, role: str, name: str):
+        return _RoleLocator(0)
+
+    def get_by_text(self, *_args, **_kwargs):
+        return _RoleLocator(0)
+
+    def title(self) -> str:
+        return "setupSuperUser"
+
+    def wait_for_load_state(self, *_args, **_kwargs):
+        return None
+
+    def wait_for_timeout(self, *_args, **_kwargs):
+        self._wait_calls += 1
+        if self._wait_calls >= 1:
+            self.login_visible = True
+
+
+class _NoNextButNamedLoginAppearsPage:
+    def __init__(self):
+        self.url = "http://matomo/index.php?action=setupSuperUser&module=Installation"
+        self.login_visible = False
+        self._wait_calls = 0
+
+    def locator(self, selector: str):
+        return _NameOnlyStaticLocator(self, selector)
+
+    def get_by_role(self, role: str, name: str):
+        return _RoleLocator(0)
+
+    def get_by_text(self, *_args, **_kwargs):
+        return _RoleLocator(0)
+
+    def title(self) -> str:
+        return "setupSuperUser"
+
+    def wait_for_load_state(self, *_args, **_kwargs):
+        return None
+
+    def wait_for_timeout(self, *_args, **_kwargs):
+        self._wait_calls += 1
+        if self._wait_calls >= 1:
+            self.login_visible = True
+
+
+class TestWebInstallerLocatorCountIntegration(unittest.TestCase):
+    def test_retries_transient_navigation_error(self) -> None:
+        locator = _FlakyLocator(
+            [
+                RuntimeError(
+                    "Locator.count: Execution context was destroyed, most likely because of a navigation"
+                ),
+                RuntimeError(
+                    "Locator.count: Execution context was destroyed, most likely because of a navigation"
+                ),
+                1,
+            ]
+        )
+
+        result = _count_locator(locator, timeout_s=0.5, retry_interval_s=0.0)
+
+        self.assertEqual(result, 1)
+        self.assertEqual(locator.calls, 3)
+
+    def test_raises_non_transient_error_without_retry(self) -> None:
+        locator = _FlakyLocator([RuntimeError("Locator is not attached to DOM")])
+
+        with self.assertRaises(RuntimeError):
+            _count_locator(locator, timeout_s=0.5, retry_interval_s=0.0)
+
+        self.assertEqual(locator.calls, 1)
+
+    def test_click_next_wait_treats_login_form_as_progress(self) -> None:
+        page = _NoNextButLoginAppearsPage()
+
+        step = _click_next_with_wait(page, timeout_s=1)
+
+        self.assertEqual(step, "Installation:setupSuperUser")
+        self.assertTrue(page.login_visible)
+
+    def test_click_next_wait_treats_named_login_form_as_progress(self) -> None:
+        page = _NoNextButNamedLoginAppearsPage()
+
+        step = _click_next_with_wait(page, timeout_s=1)
+
+        self.assertEqual(step, "Installation:setupSuperUser")
+        self.assertTrue(page.login_visible)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/integration/test_web_installer_warnings.py

@@ -0,0 +1,128 @@
+import io
+import unittest
+from contextlib import redirect_stderr
+
+
+# Import the function under test.
+# This keeps the test close to real integration behavior without requiring Playwright.
+from matomo_bootstrap.installers.web import _page_warnings
+
+
+class _FakeLocatorNth:
+    def __init__(self, text: str):
+        self._text = text
+
+    def inner_text(self) -> str:
+        return self._text
+
+
+class _FakeLocator:
+    def __init__(self, texts: list[str]):
+        self._texts = texts
+
+    def count(self) -> int:
+        return len(self._texts)
+
+    def nth(self, i: int) -> _FakeLocatorNth:
+        return _FakeLocatorNth(self._texts[i])
+
+
+class _FakePage:
+    """
+    Minimal Playwright-like page stub:
+    - locator(selector) -> object with count() / nth(i).inner_text()
+    - url, title()
+    """
+
+    def __init__(self, *, url: str, title: str, selector_texts: dict[str, list[str]]):
+        self.url = url
+        self._title = title
+        self._selector_texts = selector_texts
+
+    def title(self) -> str:
+        return self._title
+
+    def locator(self, selector: str) -> _FakeLocator:
+        return _FakeLocator(self._selector_texts.get(selector, []))
+
+
+class TestWebInstallerWarningsIntegration(unittest.TestCase):
+    def test_detects_bootstrap_alert_warning_block(self) -> None:
+        """
+        Matomo installer commonly renders validation errors like:
+          <div class="alert alert-warning"> ... <ul><li>...</li></ul> ... </div>
+        We must detect and print those messages to stderr.
+        """
+        page = _FakePage(
+            url="http://matomo/index.php?action=setupSuperUser&module=Installation",
+            title="Superuser",
+            selector_texts={
+                # The key selector from the observed DOM
+                ".alert.alert-warning": [
+                    "Please fix the following errors:\n"
+                    "Password required\n"
+                    "Password (repeat) required\n"
+                    "The email doesn't have a valid format."
+                ],
+            },
+        )
+
+        buf = io.StringIO()
+        with redirect_stderr(buf):
+            warnings = _page_warnings(page, prefix="[install]")
+
+        # Function must return the warning text
+        self.assertEqual(len(warnings), 1)
+        self.assertIn("Please fix the following errors:", warnings[0])
+        self.assertIn("The email doesn't have a valid format.", warnings[0])
+
+        # And it must print it to stderr (stdout must remain token-only in the app)
+        out = buf.getvalue()
+        self.assertIn("[install] page warnings/errors detected", out)
+        self.assertIn("Superuser", out)
+        self.assertIn("The email doesn't have a valid format.", out)
+
+    def test_deduplicates_repeated_warning_blocks(self) -> None:
+        """
+        Some Matomo versions repeat the same alert in multiple containers.
+        We must return/log each unique text only once.
+        """
+        repeated = (
+            "Please fix the following errors:\nThe email doesn't have a valid format."
+        )
+        page = _FakePage(
+            url="http://matomo/index.php?action=setupSuperUser&module=Installation",
+            title="Superuser",
+            selector_texts={
+                ".alert.alert-warning": [repeated, repeated],
+            },
+        )
+
+        buf = io.StringIO()
+        with redirect_stderr(buf):
+            warnings = _page_warnings(page, prefix="[install]")
+
+        self.assertEqual(warnings, [repeated])
+
+        out = buf.getvalue()
+        # Only a single numbered entry should be printed
+        self.assertIn("[install]  1) ", out)
+        self.assertNotIn("[install]  2) ", out)
+
+    def test_no_output_when_no_warnings(self) -> None:
+        page = _FakePage(
+            url="http://matomo/",
+            title="Welcome",
+            selector_texts={},
+        )
+
+        buf = io.StringIO()
+        with redirect_stderr(buf):
+            warnings = _page_warnings(page, prefix="[install]")
+
+        self.assertEqual(warnings, [])
+        self.assertEqual(buf.getvalue(), "")
+
+
+if __name__ == "__main__":
+    unittest.main()