- add SPDX licensing information for REUSE compliance
- drop the JSONC comment from devcontainer.json, keeping it strict JSON
  (as required by the check-json pre-commit hook)
- bump the base image to the current ghcr.io/devture/ansible release
- mention the dev container in docs/ansible.md

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Add devcontainer config

flake.lock already pins agru at the v0.2.1 commit (via #5415);
this label only names the built derivation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

This lets Renovate periodically refresh flake.lock, keeping the
nixpkgs and agru inputs of the development shell up to date.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Add agru to flake.nix

Based on https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/4219 by @mcnesium

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Attaches a com.centurylinklabs.watchtower.enable=false label to the
matrix-matrixto container by default, telling Watchtower (if in use)
to skip it. The image is built locally from source, so Watchtower
cannot update it and merely produces 'digest retrieval failed' errors
on every run.

A dedicated variable is used (instead of pre-filling
matrix_matrixto_container_labels_additional_labels) so that people
overriding the additional-labels variable do not lose the label.

Fixes #4820

Based on the report and initial patch in
https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/4821 by @der-domi

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Add Commet client documentation

The galaxy roles were renamed to shorter install paths back in
c0595d6e4 (2023-11-19), but jitsi_jvb.yml was not updated, so running
it failed with 'role not found' ever since.

Reported in https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/5269 by @mcepl

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Running `just add-inventory-host example.com 1.2.3.4` (or
`make add-inventory-host domain=example.com ip=1.2.3.4`) adds a new
host to the inventory, creating inventory/hosts and
inventory/host_vars/matrix.DOMAIN/vars.yml from the example files,
with strong secrets generated automatically.

Existing configuration is never overwritten. The command refuses to
run if the host is already in the inventory, so it can also be used
for adding more hosts later.

Based on the idea proposed in
https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/4682 by @Ser5

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

The sygnal container images (since v0.16.0) hardcode a HEALTHCHECK which
relies on curl, but the image does not include curl, so the healthcheck
can never pass. See https://github.com/element-hq/sygnal/issues/326

This unblocks upgrading sygnal past v0.15.1.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Remove matrix-registration-bot

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

This is a major upgrade which performs a one-way database migration
and removes LDAP support upstream.

The continuwuity.toml.j2 template is re-synced with the v26.6.1 example
config. Notably, registration_token is now only rendered when non-empty,
because v26+ refuses to start when it is set to an empty string.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

- Updated `welcome_background_url` to upstream default *lake.jpg* for the official Matrix Client Element.
- Provoked by: [Convert welcome.html to React component](4b4289e211)

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 8.3.0 to 8.3.1.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](https://github.com/astral-sh/setup-uv/compare/v8.3.0...v8.3.1)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: 8.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>