diff --git a/cliff.toml b/cliff.toml
new file mode 100644
index 0000000..755df45
--- /dev/null
+++ b/cliff.toml
@@ -0,0 +1,85 @@
+# git-cliff ~ default configuration file
+# https://git-cliff.org/docs/configuration
+#
+# Lines starting with "#" are comments.
+# Configuration options are organized into tables and keys.
+# See documentation for more information on available options.
+
+[changelog]
+# template for the changelog header
+header = """
+# Changelog\n
+All notable changes to this project will be documented in this file.\n
+"""
+# template for the changelog body
+# https://keats.github.io/tera/docs/#introduction
+body = """
+{% if version %}\
+    ## [{{ version | trim_start_matches(pat="v") }}] - {{ timestamp | date(format="%Y-%m-%d") }}
+{% else %}\
+    ## [unreleased]
+{% endif %}\
+{% for group, commits in commits | group_by(attribute="group") %}
+    ### {{ group | striptags | trim | upper_first }}
+    {% for commit in commits %}
+        - {% if commit.scope %}*({{ commit.scope }})* {% endif %}\
+            {% if commit.breaking %}[**breaking**] {% endif %}\
+            {{ commit.message | upper_first }}\
+    {% endfor %}
+{% endfor %}\n
+"""
+# template for the changelog footer
+footer = """
+<!-- generated by git-cliff -->
+"""
+# remove the leading and trailing s
+trim = true
+# postprocessors
+postprocessors = [
+  # { pattern = '<REPO>', replace = "https://github.com/orhun/git-cliff" }, # replace repository URL
+]
+# render body even when there are no releases to process
+# render_always = true
+# output file path
+# output = "test.md"
+
+[git]
+# parse the commits based on https://www.conventionalcommits.org
+conventional_commits = true
+# filter out the commits that are not conventional
+filter_unconventional = true
+# process each line of a commit as an individual commit
+split_commits = false
+# regex for preprocessing the commit messages
+commit_preprocessors = [
+  # Replace issue numbers
+  #{ pattern = '\((\w+\s)?#([0-9]+)\)', replace = "([#${2}](<REPO>/issues/${2}))"},
+  # Check spelling of the commit with https://github.com/crate-ci/typos
+  # If the spelling is incorrect, it will be automatically fixed.
+  #{ pattern = '.*', replace_command = 'typos --write-changes -' },
+]
+# regex for parsing and grouping commits
+commit_parsers = [
+  { message = "^feat", group = "<!-- 0 -->🚀 Features" },
+  { message = "^fix", group = "<!-- 1 -->🐛 Bug Fixes" },
+  { message = "^doc", group = "<!-- 3 -->📚 Documentation" },
+  { message = "^perf", group = "<!-- 4 -->⚡ Performance" },
+  { message = "^refactor", group = "<!-- 2 -->🚜 Refactor" },
+  { message = "^style", group = "<!-- 5 -->🎨 Styling" },
+  { message = "^test", group = "<!-- 6 -->🧪 Testing" },
+  { message = "^chore\\(release\\): prepare for", skip = true },
+  { message = "^chore: update CHANGELOG.md", skip = true },
+  { message = "^chore\\(deps.*\\)", skip = true },
+  { message = "^chore\\(pr\\)", skip = true },
+  { message = "^chore\\(pull\\)", skip = true },
+  { message = "^chore|^ci", group = "<!-- 7 -->⚙️ Miscellaneous Tasks" },
+  { body = ".*security", group = "<!-- 8 -->🛡️ Security" },
+  { message = "^revert", group = "<!-- 9 -->◀️ Revert" },
+  { message = ".*", group = "<!-- 10 -->💼 Other" },
+]
+# filter out the commits that are not matched by commit parsers
+filter_commits = false
+# sort the tags topologically
+topo_order = false
+# sort the commits inside sections by oldest/newest order
+sort_commits = "oldest"
diff --git a/db/CHANGELOG.md b/db/CHANGELOG.md
new file mode 100644
index 0000000..4256e34
--- /dev/null
+++ b/db/CHANGELOG.md
@@ -0,0 +1,89 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [db-gateway-v1.0.0] - 2026-06-04
+
+### 🚀 Features
+
+- *(db)* Add influx in db stack
+- *(db)* Add traefik config example with actual server
+- *(db)* Add rabittmq as mqtt stack
+- *(db)* Add influx gateway from previous project
+- *(db)* Add mqtt gateway from previous project
+- *(db)* Merge datapoint and message
+- *(db)* Add SubscribeTyped function and refactor DataPoint structure
+- *(db)* Add initial main implementation
+- *(db)* Add rest gateway
+- *(db)* Add GET current value endpoint
+- *(db)* Add GET history endpoint
+- *(db)* Add mapping
+- *(db)* Add swagger doc
+- *(db)* Add parameter for time window in history endpoint
+- *(db)* Add basic auth
+- *(db)* Add deploiement stack
+- *(db)* Add node tag for influx
+- *(db)* Remove CO2PPM data over 1'000'000'000
+- *(db)* Add battery field
+- *(db)* Add battery REST endpoint
+- *(db)* Get mapping dynamically from file
+- *(db)* Add endpoint to export influx data to csv
+- *(server)* Add traefik entry for ui dashboard
+- *(db)* Add co2 watchdog on each room
+- *(db)* Add co2-status endpoint in REST API
+
+### 🐛 Bug Fixes
+
+- *(db)* Add missing entrypoint for influx explorer
+- *(db)* Add missing hostname for influx access in traefik
+- *(db)* Wrong mqtt port
+- *(db)* Typo in certResolver
+- *(db)* Fail if now defaut user / password for mqtt
+- *(db)* Allow gRPC proxy in traefik
+- *(db)* Proper api url instead of using swagger doc url
+- *(db)* CORS request
+- *(db)* Url for api start with https
+- *(db)* Get rooms from mapping file
+- *(db)* Set time interval for influx limitations
+- *(db)* Set higher file limit for influx limitations
+- *(db)* Remove authorization for battery status endpoint
+- *(db)* Window -> window_open
+- *(db)* Push data with partial mapping
+- *(db)* Filter random value
+- *(db)* Mqtt hostname to keep internal config identique in case of rebuild
+- *(db)* Add the room in the returned json
+- *(db)* Return time in RFC3339 to avoid breakchange
+- *(db)* Return window tag in room status
+- *(db)* Return only high co2 room for co2-status endpoint
+- *(db)* Return error directly
+
+### 🚜 Refactor
+
+- *(db)* Move package
+- *(db)* Unify env getters
+- *(db)* Split campus and room mapping error detection
+- *(db)* Map room and node on REST API
+- *(db)* Add flag to run without MQTT part
+- *(db)* Adapt SQL query for 5 min average
+- *(db)* Round averages in SQL queries
+- *(db)* Using moving average for room history
+- *(db)* Change order for history
+- *(db)* Add constante for max QOS
+- *(db)* Add constante for defaultTimeout
+
+### 📚 Documentation
+
+- *(db)* Add deployement documentation
+- *(db)* Fix typo in doc
+
+### ⚙️ Miscellaneous Tasks
+
+- Init
+- *(db)* Typo and respect go guidelines
+- *(db)* Get InfluxDB token by secrets
+- *(db)* Update critical dependancy
+- *(db)* Add pre-commit for swagger documentation
+- *(db)* Add local gitignore
+- *(db)* Set 30min before offline for battery endpoint
+
+<!-- generated by git-cliff -->
diff --git a/gateway/CHANGELOG.md b/gateway/CHANGELOG.md
new file mode 100644
index 0000000..81a1ac1
--- /dev/null
+++ b/gateway/CHANGELOG.md
@@ -0,0 +1,55 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [unreleased]
+
+### ⚙️ Miscellaneous Tasks
+
+- Remove useless gitkeep file
+
+## [gateway-v1.0.0] - 2026-06-04
+
+### 🚀 Features
+
+- Add BLE-to-MQTT gateway implementation
+- *(gateway)* Add configuration file
+- *(gateway)* Implement BLE-to-MQTT gateway
+- *(gateway)* Add MQTTS support with TLS and authentication
+- *(gateway)* Add battery level support (key 0x05)
+- *(gateway)* Add deduplication and continuous BLE scan
+
+### 🐛 Bug Fixes
+
+- *(gateway)* Fix architecture diagram code block in README
+- *(gateway)* Fix architecture diagram code block in README
+- *(gateway)* Fix payload decoding endianness and skip preamble  Switch temperature and CO2 decoding from little-endian to big-endian to match the Zephyr firmware implementation. Skip the 2-byte company id preamble (0xffff) at the start of the manufacturer data payload.
+- *(gateway)* Replace UUID filter with manufacturer data preamble filter
+- *(gateway)* Replace UUID filter with manufacturer data preamble filter
+- *(gateway)* Fix BLE filtering and MQTT connection validation
+- *(gateway)* Use exact payload size filter and improve robustness
+- *(gateway)* Revert CO2 range check and add MQTT auto-reconnect
+
+### 🚜 Refactor
+
+- *(gateway)* Switch from GATT connection to passive BLE advertising
+
+### 📚 Documentation
+
+- Add gateway README
+- Add overnight test results and measurements graph
+- Add overnight test results section to README
+- *(gateway)* Add README with architecture and MQTT interface
+- *(gateway)* Document MQTT_PASSWORD environment variable in README
+- *(gateway)* Add deployment checklist, systemd service and update README
+- *(gateway)* Update README with battery field, security fixes and warnings
+
+### ⚙️ Miscellaneous Tasks
+
+- Init
+- *(gateway)* Add Python dependencies file
+- *(gateway)* Exclude config.json from repo, add example config
+- *(gateway)* Use placeholder values in config.example.json
+- *(gateway)* Update config.example.json with TLS and auth fields
+
+<!-- generated by git-cliff -->
diff --git a/nodes/CHANGELOG.md b/nodes/CHANGELOG.md
new file mode 100644
index 0000000..3f7e472
--- /dev/null
+++ b/nodes/CHANGELOG.md
@@ -0,0 +1,56 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [unreleased]
+
+### ⚙️ Miscellaneous Tasks
+
+- Remove useless gitkeep file
+- Remove zephyr sample file
+- Remove release file from repo
+
+## [nodes-v1.1.0] - 2026-06-04
+
+### 🚀 Features
+
+- *(nodes)* Adding management of read error on each values, hence
+- *(nodes)* Add the battery level in the ble frame
+- *(nodes)* Adding battery percent as new key/value in the BLE frame
+- *(nodes)* Using an explicit thread, as it may cause the huge battery usage
+- *(nodes)* Setting the fastest BLE advertising frequency to 1 minute instead of 2
+
+### 🐛 Bug Fixes
+
+- *(nodes)* Changing incorrect comment
+- *(nodes)* Using MAC address as BT_ADDR
+- *(nodes)* Reduce battery consumption
+
+### 📚 Documentation
+
+- *(nodes)* Adding comments in the nodes code
+
+## [nodes-v1.0.0] - 2026-06-04
+
+### 🚀 Features
+
+- *(nodes)* WIP supervisor first implementation
+- *(nodes)* Adding thermometer and hygrometer
+- *(nodes)* WIP adding first implementation for BLE advertising.
+- *(nodes)* Adding co2_level retrieval
+- *(nodes)* Adding window status reading
+- *(nodes)* Adding nodes firmware v1.0
+
+### 🐛 Bug Fixes
+
+- *(nodes)* Adjusting broadcasted data to fit definition
+- *(nodes)* Fixing switch device tree and wrong ordering of ble values
+- *(nodes)* Properly fetching data from temp/hygro sensor
+- *(nodes)* Co2 level fetched as desibed in the documentation
+- *(nodes)* Changing window status sensor to have unequipped nodes return 'window is closed' status
+
+### ⚙️ Miscellaneous Tasks
+
+- Init
+
+<!-- generated by git-cliff -->
diff --git a/notification_service/CHANGELOG.md b/notification_service/CHANGELOG.md
new file mode 100644
index 0000000..735d12b
--- /dev/null
+++ b/notification_service/CHANGELOG.md
@@ -0,0 +1,28 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [unreleased]
+
+### 🚀 Features
+
+- *(notification)* Spring Boot Teams notification service (#19)
+- *(notification)* Add mock mode for local testing without backend (#19 #21)
+- *(notification-service)* Replace Teams with Telegram notifications
+- *(notification-service)* Add Dockerfile, actuator health and alert deduplication
+- *(notification-service)* Adapt to Go backend /api/v1/rooms/high-co2 endpoint
+
+### 🐛 Bug Fixes
+
+- *(notification)* Remove non-existent starter-scheduling dep, target Java 17
+
+### 🧪 Testing
+
+- *(notification-service)* Add unit tests and clean up Co2Level
+
+### ⚙️ Miscellaneous Tasks
+
+- *(notification-service)* Add CI/CD pipeline with Docker, SSH deploy and API credentials
+- *(notification-service)* Add SAST, dependency scan and DAST security gates
+
+<!-- generated by git-cliff -->
diff --git a/ui/CHANGELOG.md b/ui/CHANGELOG.md
new file mode 100644
index 0000000..c194050
--- /dev/null
+++ b/ui/CHANGELOG.md
@@ -0,0 +1,40 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [unreleased]
+
+### 🚀 Features
+
+- *(ui)* Initialize Angular 18 dashboard project
+- *(ui)* Create organized folder structure for application
+- *(ui)* Configure routing with lazy-loaded components
+- *(ci)* Add Docker build, push and SSH deploy pipeline
+- *(ui)* Implement interactive room map with REST services and unit tests
+- *(ui)* Interactive room map, detail panel redesign and polling
+- *(ui)* Dynamic room polling, secure credentials and CO2 levels
+
+### 🐛 Bug Fixes
+
+- *(ui)* Add environment.prod.ts for production builds
+- *(ui)* Address code review feedback
+- *(ui)* Remove hardcoded credentials and make CO2 spec config-driven
+
+### 🚜 Refactor
+
+- *(ui)* Simplify room names and remove dead code
+
+### 🎨 Styling
+
+- *(ui)* Apply Prettier formatting
+- *(ui)* Apply Prettier formatting
+
+### ⚙️ Miscellaneous Tasks
+
+- Init
+- *(ui)* Setup GitHub Actions CI/CD pipeline
+- *(ui)* Remove commented-out gitignore line for environment.prod.ts
+- *(ui)* Add plan.svg floor plan asset
+- Remove useless gitkeep file
+
+<!-- generated by git-cliff -->