allow same version when update the version

.gitea/workflows/build_and_puplish.yml

@@ -29,7 +29,7 @@ jobs:
             - name: Build Package Files
               run: npm run package
             - name: Update package.json Version
-              run: npm version ${{ github.ref_name }} --no-git-tag-version
+              run: npm version ${{ github.ref_name }} --no-git-tag-version --allow-same-version
             - name: Commit and Push Changes
               run: |
                   git config user.name "${{ vars.USERNAME_GIT }}"
@@ -40,7 +40,7 @@ jobs:
                   # Get current branch; if detached, resolve to a remote branch that contains this commit
                   BRANCH="$(git rev-parse --abbrev-ref HEAD)"
                   if [[ "$BRANCH" == "HEAD" || -z "$BRANCH" ]]; then
-                    # If target_commitish is a branch, use it; if it’s a SHA, find a branch that contains it
+                    # If target_commitish is a branch, use it; if it's a SHA, find a branch that contains it
                     CANDIDATE='${{ github.event.release.target_commitish }}'
                     if [[ "$CANDIDATE" =~ ^[0-9a-f]{40}$ ]]; then
                       BRANCH="$(git branch -r --contains "$GITHUB_SHA" | sed -n 's|.*origin/||p' | head -n1)"

LICENSE

@@ -1,21 +1,661 @@
-MIT License
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
 
-Copyright (c) 2025 Christoph
+Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
+                            Preamble
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
+The GNU Affero General Public License is a free, copyleft license for
-copies or substantial portions of the Software.
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+The licenses for most software and other practical works are designed
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+to take away your freedom to share and change the works. By contrast,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+our General Public Licenses are intended to guarantee your freedom to
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+share and change all versions of a program--to make sure it remains free
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+software for all its users.
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+
-SOFTWARE.
+When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate. Many developers of free software are heartened and
+encouraged by the resulting cooperation. However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community. It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server. Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals. This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+0. Definitions.
+
+"This License" refers to version 3 of the GNU Affero General Public License.
+
+"Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+"The Program" refers to any copyrightable work licensed under this
+License. Each licensee is addressed as "you". "Licensees" and
+"recipients" may be individuals or organizations.
+
+To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy. The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License. If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+1. Source Code.
+
+The "source code" for a work means the preferred form of the work
+for making modifications to it. "Object code" means any non-source
+form of a work.
+
+A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form. A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities. However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work. For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+The Corresponding Source for a work in source code form is that
+same work.
+
+2. Basic Permissions.
+
+All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met. This License explicitly affirms your unlimited
+permission to run the unmodified Program. The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work. This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force. You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright. Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under
+the conditions stated below. Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+4. Conveying Verbatim Copies.
+
+You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+5. Conveying Modified Source Versions.
+
+You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+6. Conveying Non-Source Forms.
+
+You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling. In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage. For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product. A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+"Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source. The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information. But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed. Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+7. Additional Terms.
+
+"Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law. If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it. (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.) You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10. If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term. If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+8. Termination.
+
+You may not propagate or modify a covered work except as expressly
+provided under this License. Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License. If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or
+run a copy of the Program. Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance. However,
+nothing other than this License grants you permission to propagate or
+modify any covered work. These actions infringe copyright if you do
+not accept this License. Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License. You are not responsible
+for enforcing compliance by third parties with this License.
+
+An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations. If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License. For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License. You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all. For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software. This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time. Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    nx-post-support
+    Copyright (C) 2025  Christoph
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -1,6 +1,6 @@
 # NX Postprocessor Support
 
-A comprehensive VS Code extension providing language support for NX CAD postprocessor development, including CDL (Cutter Definition Language), TCL, and DEF files.
+A comprehensive VS Code extension providing language support for NX CAM postprocessor development, including CDL, TCL, and DEF files.
 
 ## Features
 
@@ -12,7 +12,7 @@ A comprehensive VS Code extension providing language support for NX CAD postproc
 
 ## Supported File Types
 
-- `.cdl` - NX Cutter Definition Language files
+- `.cdl` - NX User Defined Event File
 - `.tcl` - NX TCL postprocessor files
 - `.def` - NX Definition files
 
@@ -46,4 +46,4 @@ This extension is actively maintained. For issues or feature requests, please vi
 
 ## License
 
-MIT License - see LICENSE file for details.
+AGPL-3.0 License - see LICENSE file for details.

client/src/common/handlers.ts

@@ -271,3 +271,180 @@ export function tclDocumentSymbolProvider(document: vscode.TextDocument): vscode
 
     return collectSymbols(rootScope)
 }
+
+export function cdlDocumentSymbolProvider(document: vscode.TextDocument): vscode.DocumentSymbol[] {
+    const lines = document.getText().split("\n")
+
+    interface Scope {
+        symbol: vscode.DocumentSymbol
+        startLine: number
+    }
+
+    const root = new vscode.DocumentSymbol(
+        "root",
+        "",
+        vscode.SymbolKind.Namespace,
+        new vscode.Range(0, 0, lines.length, 0),
+        new vscode.Range(0, 0, 0, 0)
+    )
+    root.children = []
+    const stack: Scope[] = [{ symbol: root, startLine: 0 }]
+
+    let pending: { name: string; kind: vscode.SymbolKind; startLine: number } | null = null
+
+    for (let i = 0; i < lines.length; i++) {
+        const line = lines[i]
+        const trimmed = line.trim()
+
+        const createSymbol = () => {
+            if (!pending) {
+                return
+            }
+            const startRange = new vscode.Range(
+                pending.startLine,
+                0,
+                pending.startLine,
+                lines[pending.startLine].length
+            )
+            const symbol = new vscode.DocumentSymbol(
+                pending.name,
+                "",
+                pending.kind,
+                startRange,
+                startRange
+            )
+            symbol.children = []
+            stack[stack.length - 1].symbol.children?.push(symbol)
+            stack.push({ symbol, startLine: pending.startLine })
+            pending = null
+        }
+
+        if (pending && trimmed.includes("{")) {
+            createSymbol()
+        }
+
+        if (trimmed.startsWith("}")) {
+            const scope = stack.pop()
+            if (scope) {
+                scope.symbol.range = new vscode.Range(scope.startLine, 0, i, line.length)
+            }
+            continue
+        }
+
+        let match
+        if ((match = /^\s*EVENT\s+(\w+)/.exec(line))) {
+            pending = {
+                name: match[1],
+                kind: vscode.SymbolKind.Event,
+                startLine: i
+            }
+            if (line.includes("{")) {
+                createSymbol()
+            }
+        } else if ((match = /^\s*PARAM\s+(\w+)/.exec(line))) {
+            pending = {
+                name: match[1],
+                kind: vscode.SymbolKind.Field,
+                startLine: i
+            }
+            if (line.includes("{")) {
+                createSymbol()
+            }
+        }
+    }
+
+    return root.children || []
+}
+
+export function defDocumentSymbolProvider(document: vscode.TextDocument): vscode.DocumentSymbol[] {
+    const lines = document.getText().split("\n")
+
+    interface Scope {
+        symbol: vscode.DocumentSymbol
+        startLine: number
+    }
+
+    const root = new vscode.DocumentSymbol(
+        "root",
+        "",
+        vscode.SymbolKind.Namespace,
+        new vscode.Range(0, 0, lines.length, 0),
+        new vscode.Range(0, 0, 0, 0)
+    )
+    root.children = []
+    const stack: Scope[] = [{ symbol: root, startLine: 0 }]
+
+    let pending: { name: string; kind: vscode.SymbolKind; startLine: number } | null = null
+
+    for (let i = 0; i < lines.length; i++) {
+        const line = lines[i]
+        const trimmed = line.trim()
+
+        const createSymbol = () => {
+            if (!pending) {
+                return
+            }
+            const startRange = new vscode.Range(
+                pending.startLine,
+                0,
+                pending.startLine,
+                lines[pending.startLine].length
+            )
+            const symbol = new vscode.DocumentSymbol(
+                pending.name,
+                "",
+                pending.kind,
+                startRange,
+                startRange
+            )
+            symbol.children = []
+            stack[stack.length - 1].symbol.children?.push(symbol)
+            stack.push({ symbol, startLine: pending.startLine })
+            pending = null
+        }
+
+        if (pending && trimmed.includes("{")) {
+            createSymbol()
+        }
+
+        if (trimmed.startsWith("}")) {
+            const scope = stack.pop()
+            if (scope) {
+                scope.symbol.range = new vscode.Range(scope.startLine, 0, i, line.length)
+            }
+            continue
+        }
+
+        let match
+        if ((match = /^\s*FORMATTING\b/.exec(line))) {
+            pending = {
+                name: "FORMATTING",
+                kind: vscode.SymbolKind.Module,
+                startLine: i
+            }
+            if (line.includes("{")) {
+                createSymbol()
+            }
+        } else if ((match = /^\s*ADDRESS\s+(\w+)/.exec(line))) {
+            pending = {
+                name: match[1],
+                kind: vscode.SymbolKind.Field,
+                startLine: i
+            }
+            if (line.includes("{")) {
+                createSymbol()
+            }
+        } else if ((match = /^\s*BLOCK_TEMPLATE\s+(\w+)/.exec(line))) {
+            pending = {
+                name: match[1],
+                kind: vscode.SymbolKind.Function,
+                startLine: i
+            }
+            if (line.includes("{")) {
+                createSymbol()
+            }
+        }
+    }
+
+    return root.children || []
+}

client/src/extension.ts

@@ -12,7 +12,8 @@ import {
     formatDefFile,
     isFirstLineMachine,
     diagnosticHandler,
-    tclDocumentSymbolProvider
+    cdlDocumentSymbolProvider,
+    defDocumentSymbolProvider
 } from "./common/handlers"
 import { registerLogger, traceError, traceLog, traceVerbose } from "./common/log/logging"
 import {
@@ -179,7 +180,26 @@ export async function activate(context: vscode.ExtensionContext) {
 
     context.subscriptions.push(formatDefProvider)
 
+    const cdlSymbolProvider = vscode.languages.registerDocumentSymbolProvider(
+        { scheme: "file", language: "cdl" },
+        {
+            provideDocumentSymbols(document: vscode.TextDocument) {
+                return cdlDocumentSymbolProvider(document)
+            }
+        }
+    )
+    context.subscriptions.push(cdlSymbolProvider)
+
     // Outline now provided by the language server (Document Symbols). Removing TS provider.
+    const defSymbolProvider = vscode.languages.registerDocumentSymbolProvider(
+        { scheme: "file", language: "def" },
+        {
+            provideDocumentSymbols(document: vscode.TextDocument) {
+                return defDocumentSymbolProvider(document)
+            }
+        }
+    )
+    context.subscriptions.push(defSymbolProvider)
 
     // Diagnostics collection
     const diagnosticCollectionCdl = vscode.languages.createDiagnosticCollection("cdl")

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "nx-post-support",
-  "version": "0.3.0",
+  "version": "2025.9.100",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "nx-post-support",
-      "version": "0.3.0",
+      "version": "2025.9.100",
       "devDependencies": {
         "@types/vscode": "^1.96.0",
         "@vscode/vsce": "^3.2.1",

server/src/lsp_server.py

@@ -46,6 +46,7 @@ from tools.semantic_tokens import _Highlighter, TOKEN_TYPES, TokenModifier
 from tools.completion_items import completion, remove_existing_items, remove_shared_keys
 from tools.inlay_hint import InlayHintGenerator
 from tools.file_sourcing import get_all_psc_files, read_psc_file
+from tools.signature_help import get_signature_help
 from lsp_tclserver import TclLanguageServer
 
 
@@ -235,6 +236,22 @@ def semantic_tokens(params: lsp.SemanticTokensParams):
     return lsp.SemanticTokens(data=data)
 
 
+@LSP_SERVER.feature(
+    lsp.TEXT_DOCUMENT_SIGNATURE_HELP,
+    lsp.SignatureHelpOptions(trigger_characters=[" ", "\t", "[", ",", "(", "{", '"', "'"], retrigger_characters=list("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_:$\"'{}[]() ,\t")),
+)
+def signature_help(params: lsp.SignatureHelpParams) -> lsp.SignatureHelp | None:
+    document = LSP_SERVER.workspace.get_text_document(params.text_document.uri)
+    tree = LSP_SERVER.get_tree(document)
+
+    # Merge proc signatures across files
+    merged_signatures = {}
+    for sigs in LSP_SERVER.proc_signatures.values():
+        merged_signatures.update(sigs)
+
+    return get_signature_help(document.source, tree, merged_signatures, params.position)
+
+
 @LSP_SERVER.feature(lsp.TEXT_DOCUMENT_HOVER)
 def hover(params: lsp.HoverParams) -> lsp.Hover:
     pos = params.position

server/src/tools/checks.py

@@ -1,11 +1,12 @@
 from enum import Enum
-from tclint.syntax_tree import Visitor, BareWord, Command
+from tclint.syntax_tree import Visitor, BareWord, Command, VarSub, QuotedWord, BracedWord
 from tclint.violations import Violation, Rule
 
 
 class Rules(Enum):
     VALIDATION = "validation"
     OPTIONAL_ARG_POSITION = "optinal_args"
+    UNDECLARED_VARIABLE = "undeclared-variable"
 
     def __str__(self):
         return self.value
@@ -21,10 +22,7 @@ class CommandArgsCheck(Visitor):
         return self._violations
 
     def visit_command(self, command: Command):
-        if (
+        if not hasattr(command.routine, "contents") or command.routine.contents != "proc":
-            not hasattr(command.routine, "contents")
-            or command.routine.contents != "proc"
-        ):
             return
         if len(command.args) < 2:
             return
@@ -51,7 +49,130 @@ class CommandArgsCheck(Visitor):
                 found_optional = True
 
 
+class UndeclaredVariableCheck(Visitor):
+    """
+    Warn when inside a proc a variable is used ($var) that is neither:
+    - declared global in the proc via `global var`, nor
+    - referenced as namespaced global (e.g. $::var), nor
+    - assigned locally in the proc via `set var ...`, nor
+    - a proc argument.
+    """
+
+    def __init__(self):
+        self._violations = []
+
+    def check(self, source, tree):
+        self._violations.clear()
+        # Traverse to find procs; inner scanning is handled per-proc
+        tree.accept(self, recurse=True)
+        return self._violations
+
+    def visit_command(self, command: Command):
+        # Only interested in procs
+        if not hasattr(command.routine, "contents"):
+            return
+        if command.routine.contents != "proc":
+            return
+        # Expect: proc <name> <args> <body>
+        if len(command.args) < 3:
+            return
+
+        proc_name_node = command.args[0]
+        args_node = command.args[1]
+        body_node = command.args[2]
+
+        # Collect proc arg names
+        arg_names = set()
+        if hasattr(args_node, "children"):
+            for child in args_node.children:
+                if isinstance(child, BareWord):
+                    if child.contents:
+                        arg_names.add(child.contents)
+                elif hasattr(child, "children") and child.children:
+                    # Defaulted arg: first element should be the arg name
+                    first = child.children[0]
+                    if hasattr(first, "contents") and first.contents:
+                        arg_names.add(first.contents)
+
+        # Two-pass scan over body: first collect locals (set) and declared globals
+        locals_set = set(arg_names)
+        declared_globals = set()
+
+        def _word_text(node) -> str | None:
+            if isinstance(node, BareWord) or isinstance(node, QuotedWord) or isinstance(node, BracedWord):
+                return node.contents
+            return getattr(node, "contents", None)
+
+        def _collect(node):
+            # Depth-first walk to collect set/global declarations
+            if isinstance(node, Command) and hasattr(node.routine, "contents"):
+                name = node.routine.contents
+                if name == "global":
+                    for an in node.args:
+                        text = _word_text(an)
+                        if text:
+                            declared_globals.add(text)
+                elif name == "set" and node.args:
+                    # set var [value] - first arg is the variable name
+                    first_arg = node.args[0]
+                    text = _word_text(first_arg)
+                    if text:
+                        base = text.split("(", 1)[0]  # Handle array syntax
+                        if not base.startswith("::"):
+                            locals_set.add(base)
+                elif name == "foreach" and len(node.args) >= 3:
+                    # foreach varlist1 list1 ?varlist2 list2 ...? body
+                    # Treat loop variables as locals within the proc
+                    # Iterate pairs (varlist, list) over all but the last arg (body)
+                    pair_args = node.args[:-1]
+                    i = 0
+                    while i + 1 < len(pair_args):
+                        varnode = pair_args[i]
+                        text = _word_text(varnode) or ""
+                        # Split var list by whitespace if braced list, else single name
+                        names = text.split()
+                        for nm in names:
+                            base = nm.split("(", 1)[0]
+                            if base and not base.startswith("::"):
+                                locals_set.add(base)
+                        i += 2
+            # Recurse
+            for ch in getattr(node, "children", []):
+                _collect(ch)
+
+        _collect(body_node)
+
+        # Second pass: flag VarSub usages that are not accounted for
+        def _scan(node):
+            # 1) Variable substitutions like $var
+            if isinstance(node, VarSub):
+                var_name = node.value or ""
+                if var_name.startswith("::"):
+                    return
+                base = var_name
+                if base not in locals_set and base not in declared_globals:
+                    msg = f"Variable '{base}' used in proc is not set locally and not declared global; use 'global {base}' or '$::{base}'"
+                    self._violations.append(Violation(Rules.UNDECLARED_VARIABLE, msg, node.pos, node.end_pos))
+            # 2) Commands that take a variable name as first argument, e.g., 'incr var [amount]'
+            elif isinstance(node, Command) and hasattr(node.routine, "contents"):
+                if node.routine.contents == "incr" and node.args:
+                    first_arg = node.args[0]
+                    text = _word_text(first_arg) or ""
+                    base = text.split("(", 1)[0]
+                    if base and not base.startswith("::"):
+                        if base not in locals_set and base not in declared_globals:
+                            msg = f"Variable '{base}' used in proc is not set locally and not declared global; use 'global {base}'"
+                            self._violations.append(Violation(Rules.UNDECLARED_VARIABLE, msg, first_arg.pos, first_arg.end_pos))
+            for ch in getattr(node, "children", []):
+                _scan(ch)
+
+        _scan(body_node)
+
+
 def get_checkers():
-    checkers = (CommandArgsCheck(),)
+    checkers = (
+        CommandArgsCheck(),
+        UndeclaredVariableCheck(),
+    )
 
     return checkers

server/src/tools/completion_items.py

@@ -39,6 +39,9 @@ class _Completion(Visitor):
     def _append_unique(self, item: lsp.CompletionItem):
         # Avoid duplicate labels within the same file scan
         if not any(ci.label == item.label for ci in self._custom_functions):
+            # For functions, attach a command to trigger signature help after completion
+            if item.kind == lsp.CompletionItemKind.Function and item.command is None:
+                item.command = lsp.Command(title="Trigger Signature Help", command="editor.action.triggerParameterHints")
             self._custom_functions.append(item)
 
     def visit_command(self, command: Command):

server/src/tools/semantic_tokens.py

@@ -1,6 +1,6 @@
 import enum
 from typing import List
-from tclint.syntax_tree import Visitor, QuotedWord, Command, BareWord
+from tclint.syntax_tree import Visitor, QuotedWord, Command, BareWord, VarSub
 from tclint.commands import get_commands
 import attrs
 from common.load_data import standard_items
@@ -14,6 +14,9 @@ class TokenModifier(enum.IntFlag):
     definition = enum.auto()
     declaration = enum.auto()
     builtin = enum.auto()
+    globalvar = enum.auto()
+    reference = enum.auto()
+    write = enum.auto()
 
 
 @attrs.define
@@ -101,6 +104,10 @@ class _Highlighter(Visitor):
             if in_custom or in_standard:
                 line, col = routine.contents_pos
                 self._tokens.append((((line - 1, col - 1), len(name), "function", [])))
+            # Highlight 'global' itself as a keyword
+            if name == "global":
+                line, col = routine.contents_pos
+                self._tokens.append((((line - 1, col - 1), len(name), "keyword", [])))
 
         if routine.contents == "puts":
             line, col = routine.contents_pos
@@ -114,21 +121,34 @@ class _Highlighter(Visitor):
                     )
                 )
             )
+        # Variable declaration vs reference for 'set'
         if routine.contents == "set" and command.args:
             first_arg = command.args[0]
             token_info = self._get_token_info(first_arg)
             if token_info:
                 (line, col), length = token_info
-                self._tokens.append(
+                mods = [TokenModifier.declaration, TokenModifier.write]
-                    (
+                self._tokens.append(((line, col), length, "variable", mods))
-                        (
+            # If there is exactly one argument, 'set var' is a read/reference
-                            (line, col),
+            if len(command.args) == 1 and token_info:
-                            length,
+                (line, col), length = token_info
-                            "variable",
+                mods = [TokenModifier.reference]
-                            [TokenModifier.declaration],
+                self._tokens.append(((line, col), length, "variable", mods))
-                        )
+        # Variable modification via 'incr var [amount]'
-                    )
+        if routine.contents == "incr" and command.args:
-                )
+            first_arg = command.args[0]
+            token_info = self._get_token_info(first_arg)
+            if token_info:
+                (line, col), length = token_info
+                mods = [TokenModifier.write]
+                # Add global flag if explicitly namespaced
+                try:
+                    name_text = getattr(first_arg, "value", None) or getattr(first_arg, "contents", None) or ""
+                    if isinstance(name_text, str) and name_text.startswith("::"):
+                        mods.append(TokenModifier.globalvar)
+                except Exception:
+                    pass
+                self._tokens.append(((line, col), length, "variable", mods))
         if routine.contents == "proc" and command.args:
             first_arg = command.args[0]
             if hasattr(first_arg, "pos") and hasattr(first_arg, "value"):
@@ -153,11 +173,12 @@ class _Highlighter(Visitor):
                         # Parameter kann einfaches Wort sein
                         if hasattr(child, "value") and child.value is not None:
                             line, col = child.pos
+                            # Parameters are variables (locals): mark as variable with declaration
                             self._tokens.append(
                                 (
                                     (line - 1, col - 1),
                                     len(child.value),
-                                    "parameter",
+                                    "variable",
                                     [TokenModifier.declaration],
                                 )
                             )
@@ -171,7 +192,7 @@ class _Highlighter(Visitor):
                                     (
                                         (line - 1, col - 1),
                                         len(name_node.value),
-                                        "parameter",
+                                        "variable",
                                         [TokenModifier.declaration],
                                     )
                                 )
@@ -181,6 +202,17 @@ class _Highlighter(Visitor):
                 line, col = first_arg.pos
                 self._tokens.append((((line - 1, col - 1), len(first_arg.value), "class", [])))
 
+        # Highlight variables used via $var and $::var as references (read)
+        for arg in getattr(command, "args", []):
+            for child in getattr(arg, "children", []):
+                if isinstance(child, VarSub) and hasattr(child, "pos") and child.value:
+                    line, col = child.pos
+                    # Determine if this looks like a global reference ($::var)
+                    mods = [TokenModifier.reference]
+                    if child.value.startswith("::"):
+                        mods.append(TokenModifier.globalvar)
+                    self._tokens.append((((line - 1, col - 1), len(child.value), "variable", mods)))
+
     def tokens(self) -> list[Token]:
         """Encode tokens as described in
         https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_semanticTokens.

server/src/tools/signature_help.py

@@ -0,0 +1,104 @@
+from __future__ import annotations
+
+from typing import Dict, List, Optional, Tuple
+import lsprotocol.types as lsp
+from tclint.syntax_tree import Visitor, Command, Node
+
+
+class _CommandAtPositionFinder(Visitor):
+    def __init__(self, line1: int, col1: int, lines: list[str]):
+        # Cursor position in 1-based line/col to match AST
+        self.line1 = line1
+        self.col1 = col1
+        self.lines = lines
+        self.match: Optional[Command] = None
+
+    def _pos_le(self, a: Tuple[int, int] | None, b: Tuple[int, int] | None) -> bool:
+        if a is None or b is None:
+            return False
+        return a[0] < b[0] or (a[0] == b[0] and a[1] <= b[1])
+
+    def _pos_ge(self, a: Tuple[int, int] | None, b: Tuple[int, int] | None) -> bool:
+        if a is None or b is None:
+            return False
+        return a[0] > b[0] or (a[0] == b[0] and a[1] >= b[1])
+
+    def _contains_or_trailing(self, node: Node) -> bool:
+        # Standard containment
+        if self._pos_le(node.pos, (self.line1, self.col1)) and self._pos_ge(node.end_pos, (self.line1, self.col1)):
+            return True
+        # Extend containment to trailing whitespace on same line as the command end
+        if getattr(node, "end_pos", None) and node.end_pos and node.end_pos[0] == self.line1 and self.col1 >= node.end_pos[1]:
+            try:
+                line = self.lines[self.line1 - 1]
+            except Exception:
+                line = ""
+            start = max(0, node.end_pos[1] - 1)
+            end = max(0, min(len(line), self.col1 - 1))
+            segment = line[start:end]
+            # If there is a command terminator (';' or ']') between end_pos and cursor, do not extend
+            if ";" not in segment and "]" not in segment:
+                return True
+        return False
+
+    def visit_command(self, command: Command):
+        if hasattr(command, "pos") and hasattr(command, "end_pos") and self._contains_or_trailing(command):
+            # Prefer the deepest command: overwrite and continue
+            self.match = command
+        # Continue traversal
+        for ch in getattr(command, "children", []):
+            ch.accept(self, recurse=True)
+
+
+def _compute_active_parameter(cmd: Command, line1: int, col1: int) -> int:
+    # Count which arg contains the cursor; else number of args before cursor
+    for idx, arg in enumerate(getattr(cmd, "args", []) or []):
+        if getattr(arg, "pos", None) and getattr(arg, "end_pos", None):
+            if (arg.pos[0] < line1 or (arg.pos[0] == line1 and arg.pos[1] <= col1)) and (arg.end_pos[0] > line1 or (arg.end_pos[0] == line1 and arg.end_pos[1] >= col1)):
+                return idx
+    # Not inside any arg; compute based on separator position
+    count = 0
+    for arg in getattr(cmd, "args", []) or []:
+        if getattr(arg, "end_pos", None):
+            if arg.end_pos[0] < line1 or (arg.end_pos[0] == line1 and arg.end_pos[1] <= col1):
+                count += 1
+    return min(count, max(0, len(getattr(cmd, "args", [])) - 1))
+
+
+def get_signature_help(
+    document_text: str,
+    tree,
+    merged_signatures: Dict[str, List[str]],
+    position: lsp.Position,
+) -> Optional[lsp.SignatureHelp]:
+    # Convert to 1-based coordinates expected by AST
+    line1 = position.line + 1
+    col1 = position.character + 1
+
+    # Find the innermost command that contains the position
+    # Pass lines for trailing-space containment handling
+    lines = document_text.splitlines()
+    finder = _CommandAtPositionFinder(line1, col1, lines)
+    tree.accept(finder, recurse=True)
+    cmd = finder.match
+    if not cmd or not hasattr(cmd, "routine") or not hasattr(cmd.routine, "contents"):
+        return None
+
+    routine_name = cmd.routine.contents
+    if not routine_name:
+        return None
+
+    params = merged_signatures.get(routine_name)
+    if not params:
+        # No known signature for this routine
+        return None
+
+    # Build a signature info
+    label = f"{routine_name}({', '.join(params)})"
+    parameters = [lsp.ParameterInformation(label=p) for p in params]
+
+    active_param = _compute_active_parameter(cmd, line1, col1)
+    active_param = max(0, min(active_param, len(params) - 1))
+
+    sig = lsp.SignatureInformation(label=label, parameters=parameters)
+    return lsp.SignatureHelp(signatures=[sig], active_signature=0, active_parameter=active_param)