adding gpl v3 license

LICENSE.md

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ 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.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  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.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  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 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. Use with the GNU Affero General Public License.
+
+  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 Affero 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 special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU 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 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 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 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.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU 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 General Public License for more details.
+
+    You should have received a copy of the GNU 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 the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  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 GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

backend/api/index.php

@@ -666,6 +666,14 @@ function handleDocuments($method, $id, $db) {
 function handleAttachments($method, $id, $db) {
     $username = $_SESSION['neptune_username'] ?? 'Unknown';
     $uploadDir = '/var/www/uploads/';
+    $allowedExtensions = ['pdf', 'md', 'txt', 'xlsx', 'csv', 'pptx', 'evidence'];
+    $allowedMimes = [
+        'application/pdf',
+        'text/markdown', 'text/x-markdown', 'text/plain',
+        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+        'text/csv', 'application/csv',
+        'application/vnd.openxmlformats-officedocument.presentationml.presentation',
+    ];
 
     switch ($method) {
         case 'GET':
@@ -693,7 +701,22 @@ function handleAttachments($method, $id, $db) {
                 return;
             }
             $file = $_FILES['file'];
-            $ext = pathinfo($file['name'], PATHINFO_EXTENSION);
+            $ext = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));
+
+            if (!in_array($ext, $allowedExtensions)) {
+                http_response_code(400);
+                echo json_encode(['error' => 'File type not allowed. Allowed: ' . implode(', ', $allowedExtensions)]);
+                return;
+            }
+
+            $mime = $file['type'] ?: '';
+            $mimeAllowed = empty($mime) || in_array($mime, $allowedMimes);
+            if (!$mimeAllowed && $ext !== 'evidence') {
+                http_response_code(400);
+                echo json_encode(['error' => 'Invalid file content']);
+                return;
+            }
+
             $storedName = uniqid('att_', true) . '.' . $ext;
             $dest = $uploadDir . $storedName;
 

backend/download.php

@@ -0,0 +1,54 @@
+<?php
+session_start();
+
+$loggedin = isset($_SESSION['neptune_loggedin']) && $_SESSION['neptune_loggedin'] === true;
+if (!$loggedin) {
+    http_response_code(401);
+    echo 'Unauthorized';
+    exit;
+}
+
+$file = $_GET['file'] ?? '';
+$mode = $_GET['mode'] ?? 'download';
+
+if (!$file || preg_match('/[^a-zA-Z0-9_\.\-]/', $file)) {
+    http_response_code(400);
+    echo 'Invalid file';
+    exit;
+}
+
+$path = '/var/www/uploads/' . basename($file);
+if (!file_exists($path)) {
+    http_response_code(404);
+    echo 'File not found';
+    exit;
+}
+
+require_once __DIR__ . '/config/database.php';
+$db = getDbConnection();
+$stmt = $db->prepare("SELECT original_name, mime_type FROM file_attachments WHERE stored_name = ?");
+$stmt->execute([basename($file)]);
+$att = $stmt->fetch(PDO::FETCH_ASSOC);
+
+$originalName = $att ? $att['original_name'] : basename($file);
+$mimeType = $att && $att['mime_type'] ? $att['mime_type'] : mime_content_type($path);
+
+$ext = strtolower(pathinfo($originalName, PATHINFO_EXTENSION));
+$viewable = in_array($ext, ['txt', 'md', 'pdf', 'csv']);
+
+if ($mode === 'view' && $viewable) {
+    header('Content-Disposition: inline; filename="' . $originalName . '"');
+    header('Content-Type: ' . $mimeType);
+    header('Content-Length: ' . filesize($path));
+    header('X-File-Name: ' . $originalName);
+    header('X-File-Viewable: 1');
+    readfile($path);
+    exit;
+}
+
+header('Content-Description: File Transfer');
+header('Content-Type: application/octet-stream');
+header('Content-Disposition: attachment; filename="' . $originalName . '"');
+header('Content-Length: ' . filesize($path));
+header('Cache-Control: no-cache');
+readfile($path);

docker/nginx.conf

@@ -16,7 +16,15 @@ server {
 
     location /uploads/ {
         alias /var/www/uploads/;
-        add_header Content-Disposition 'inline';
+        internal;
+    }
+
+    location /download/ {
+        fastcgi_pass php:9000;
+        fastcgi_param SCRIPT_FILENAME /var/www/backend/download.php;
+        fastcgi_param REQUEST_URI $request_uri;
+        fastcgi_param QUERY_STRING $query_string;
+        include fastcgi_params;
     }
 
     location / {

frontend/assets/css/style.css

@@ -46,8 +46,8 @@ body {
 /* Timeline */
 .timeline-item {
     position: relative;
-    padding-left: 2rem;
-    margin-bottom: 1.5rem;
+    padding-left: 1.6rem;
+    margin-bottom: 1rem;
 }
 
 .timeline-item::before {
@@ -66,10 +66,10 @@ body {
 
 .timeline-dot {
     position: absolute;
-    left: .25rem;
-    top: .35rem;
-    width: 12px;
-    height: 12px;
+    left: .15rem;
+    top: .45rem;
+    width: 10px;
+    height: 10px;
     border-radius: 50%;
     border: 2px solid;
     background: var(--neptune-card);
@@ -100,8 +100,8 @@ body {
 .comment-box {
     background: #0d1117;
     border-radius: .375rem;
-    padding: .5rem .75rem;
-    margin-top: .5rem;
+    padding: .35rem .6rem;
+    margin-top: .3rem;
 }
 
 .comment-box .comment-author {
@@ -111,13 +111,13 @@ body {
 }
 
 .comment-box .comment-body {
-    font-size: .85rem;
-    margin-top: .15rem;
+    font-size: .8rem;
+    margin-top: .05rem;
 }
 
 .comment-box + .comment-box {
     border-top: 1px solid var(--neptune-border);
-    padding-top: .5rem;
+    padding-top: .3rem;
 }
 
 .comment-log {
@@ -216,12 +216,14 @@ kbd {
 }
 
 .event-meta {
-    font-size: .75rem;
+    font-size: .7rem;
     color: #64748b;
+    white-space: nowrap;
 }
 
 .event-title {
     color: #f1f5f9;
+    font-size: .9rem;
 }
 
 .comment-input-group .btn {
@@ -281,3 +283,25 @@ kbd {
     color: #60a5fa;
     text-decoration: underline !important;
 }
+
+/* File Viewer */
+#fileViewerModal .modal-content {
+    border-color: var(--neptune-border);
+}
+
+#fileViewerBody pre {
+    margin: 0;
+    white-space: pre-wrap;
+    word-break: break-word;
+}
+
+/* Network toolbar */
+.toolbar-node-item:hover,
+.toolbar-shape-item:hover {
+    filter: brightness(1.3);
+}
+
+.toolbar-node-item:active,
+.toolbar-shape-item:active {
+    cursor: grabbing;
+}

frontend/assets/js/app.js

@@ -24,6 +24,9 @@ let dragType = null;
 let dragOffX, dragOffY;
 let dragHandle = null;
 let dragOrig = null;
+let dragNodeIds = null;
+let dragShapeId = null;
+let dragOrigShape = null;
 let selectStartX, selectStartY;
 let selectRect = null;
 
@@ -32,6 +35,91 @@ let copyBuffer = null;
 let editingNodeId = null;
 let editingShapeId = null;
 
+let syncInterval = null;
+let syncHashes = { events: null, documents: null, network: null };
+let pendingCanvasCreate = null;
+
+function startSync() {
+    if (syncInterval) return;
+    syncInterval = setInterval(async () => {
+        if (dragType || dragTarget || isPanning) return;
+        const openModals = document.querySelectorAll('.modal.show');
+        if (openModals.length > 0) return;
+        try {
+            const [eventsData, docsData, nodesData, linksData, shapesData] = await Promise.all([
+                apiFetch('events'),
+                apiFetch('documents'),
+                apiFetch('nodes'),
+                apiFetch('links'),
+                apiFetch('shapes'),
+            ]);
+
+            const eventsHash = JSON.stringify(eventsData);
+            if (eventsHash !== syncHashes.events) {
+                syncHashes.events = eventsHash;
+                events = Array.isArray(eventsData) ? eventsData : [];
+                loadAllTags();
+                renderTimeline();
+            }
+
+            const docsHash = JSON.stringify(docsData);
+            if (docsHash !== syncHashes.documents) {
+                syncHashes.documents = docsHash;
+                documents = Array.isArray(docsData) ? docsData : [];
+                renderDocuments();
+            }
+
+            const netHash = JSON.stringify({ n: nodesData, l: linksData, s: shapesData });
+            if (netHash !== syncHashes.network) {
+                syncHashes.network = netHash;
+                nodes = Array.isArray(nodesData) ? nodesData : [];
+                links = Array.isArray(linksData) ? linksData : [];
+                shapes = Array.isArray(shapesData) ? shapesData : [];
+                populateNodeSelects();
+                renderNodeList();
+                renderShapeList();
+                if (shapes.length) nextShapeZ = Math.max(...shapes.map(x => x.z_index)) + 1;
+                buildCanvasGraph();
+                renderNetwork();
+            }
+        } catch (e) {}
+    }, 5000);
+}
+
+function setupCanvasClickCreate() {
+    const wrapper = document.getElementById('networkCanvasWrapper');
+    const bar = document.getElementById('nodeToolbar');
+    wrapper.addEventListener('click', async (e) => {
+        if (!pendingCanvasCreate) return;
+        const rect = canvas.getBoundingClientRect();
+        const mx = e.clientX - rect.left - panX;
+        const my = e.clientY - rect.top - panY;
+        const type = pendingCanvasCreate;
+        pendingCanvasCreate = null;
+        if (bar) bar.querySelectorAll('.d-inline-flex').forEach(s => s.style.outline = 'none');
+
+        if (type.startsWith('shape:')) {
+            const shapeType = type.split(':')[1];
+            await apiFetch('shapes', { method: 'POST', body: JSON.stringify({
+                label: shapeType === 'rectangle' ? 'Box' : 'Ellipse',
+                shape_type: shapeType,
+                pos_x: mx - 100, pos_y: my - 75,
+                width: 200, height: 150,
+                color: '#1e3a5f', border_color: '#3b82f6',
+                opacity: 0.15, z_index: nextShapeZ++
+            })});
+        } else {
+            await apiFetch('nodes', { method: 'POST', body: JSON.stringify({
+                label: type.charAt(0).toUpperCase() + type.slice(1),
+                ip_address: '', node_type: type || 'host', status: 'unknown',
+                group_name: 'default', notes: '',
+                pos_x: mx, pos_y: my
+            })});
+        }
+        await loadNetworkData();
+    });
+}
+
 const DOC_TYPE_ICONS = {
     deployment: { icon: 'fa-server', color: '#06b6d4' },
     attack: { icon: 'fa-bolt', color: '#ef4444' },
@@ -138,9 +226,8 @@ function initApp() {
     ctx = canvas.getContext('2d');
     resizeCanvas();
 
-    loadTeams().then(() => {
-        loadEvents();
-        loadDocuments();
+    loadTeams().then(async () => {
+        await Promise.all([loadEvents(), loadDocuments()]);
     });
     loadNetworkData();
 
@@ -150,6 +237,7 @@ function initApp() {
     document.getElementById('saveShape').addEventListener('click', saveShape);
     document.getElementById('saveLinkDocs').addEventListener('click', saveLinkDocs);
     document.getElementById('addUserBtn').addEventListener('click', addUser);
+    document.getElementById('addUserBtn').addEventListener('click', addUser);
     document.getElementById('logoutBtn').addEventListener('click', logout);
     document.getElementById('teamFilter').addEventListener('change', renderTimeline);
     document.getElementById('tagFilter').addEventListener('change', renderTimeline);
@@ -167,11 +255,24 @@ function initApp() {
         document.getElementById('opacityVal').textContent = parseFloat(e.target.value).toFixed(2);
     });
 
+    const ALLOWED_EXTENSIONS = ['pdf', 'md', 'txt', 'docx', 'xlsx', 'csv', 'pptx', 'evidence'];
+
 document.getElementById('eventFileInput').addEventListener('change', (e) => {
         const preview = document.getElementById('eventFilePreview');
-        const files = e.target.files;
+        const files = Array.from(e.target.files);
+        const invalid = files.filter(f => {
+            const ext = f.name.split('.').pop().toLowerCase();
+            return !ALLOWED_EXTENSIONS.includes(ext);
+        });
+        if (invalid.length) {
+            preview.innerHTML = '<div class="text-danger small"><i class="fas fa-exclamation-circle me-1"></i>Invalid type(s): ' +
+                invalid.map(f => f.name).join(', ') +
+                '. Allowed: ' + ALLOWED_EXTENSIONS.join(', ') + '</div>';
+            e.target.value = '';
+            return;
+        }
         if (!files.length) { preview.innerHTML = ''; return; }
-        preview.innerHTML = Array.from(files).map(f =>
+        preview.innerHTML = files.map(f =>
             `<div class="small text-secondary"><i class="fas ${getFileIcon(f.type, f.name)} me-1"></i>${esc(f.name)} (${formatFileSize(f.size)})</div>`
         ).join('');
     });
@@ -267,11 +368,16 @@ async function loadTeams() {
 
 async function loadEvents() {
     events = await apiFetch('events');
+    syncHashes.events = JSON.stringify(events);
     loadAllTags();
     renderTimeline();
 }
 
 let allTags = [];
+const PAGE_SIZE = 25;
+let renderedCount = 0;
+let filteredEvents = [];
+let isLoadingMore = false;
 
 async function loadAllTags() {
     try {
@@ -290,48 +396,58 @@ function renderTimeline() {
     const tagFilter = document.getElementById('tagFilter').value;
     const search = document.getElementById('searchEvents').value.toLowerCase();
 
-    let filtered = events;
-    if (teamFilter) filtered = filtered.filter(e => e.team_id == teamFilter);
-    if (tagFilter) filtered = filtered.filter(e => e.tags && e.tags.includes(tagFilter));
-    if (search) filtered = filtered.filter(e =>
+    filteredEvents = events;
+    if (teamFilter) filteredEvents = filteredEvents.filter(e => e.team_id == teamFilter);
+    if (tagFilter) filteredEvents = filteredEvents.filter(e => e.tags && e.tags.includes(tagFilter));
+    if (search) filteredEvents = filteredEvents.filter(e =>
         e.title.toLowerCase().includes(search) ||
         (e.description && e.description.toLowerCase().includes(search)) ||
         (e.tags && e.tags.some(t => t.includes(search)))
     );
 
-    if (!filtered.length) {
+    renderedCount = 0;
+    container.innerHTML = '';
+    container.removeAttribute('style');
+    renderMoreEvents();
+}
+
+function renderMoreEvents() {
+    const container = document.getElementById('timelineContainer');
+
+    if (!filteredEvents.length) {
         container.innerHTML = '<div class="text-center text-secondary py-5"><i class="fas fa-book-open fs-1 mb-2"></i><p>No events yet. Create your first incident entry!</p></div>';
         return;
     }
 
-    container.innerHTML = filtered.map(e => {
+    const next = Math.min(renderedCount + PAGE_SIZE, filteredEvents.length);
+    const batch = filteredEvents.slice(renderedCount, next);
+
+    const html = batch.map(e => {
         const date = new Date(e.occurred_at).toLocaleString();
         return `
-        <div class="timeline-item">
+        <div class="timeline-item" data-event-id="${e.id}">
             <div class="timeline-dot severity-${e.severity}"></div>
             <div class="card timeline-card bg-dark border-secondary" style="border-left-color: ${e.team_color}">
-                <div class="card-body py-2 px-3">
+                <div class="card-body py-1 px-3">
                     <div class="d-flex justify-content-between align-items-start">
-                        <div>
-                            <span class="badge severity-badge me-1" style="background:${e.team_color}20;color:${e.team_color}">${esc(e.team_name)}</span>
+                        <div class="d-flex align-items-center gap-1 flex-wrap">
+                            <span class="badge severity-badge" style="background:${e.team_color}20;color:${e.team_color}">${esc(e.team_name)}</span>
                             <span class="badge bg-${e.severity === 'critical' ? 'danger' : e.severity === 'high' ? 'warning' : e.severity === 'medium' ? 'warning' : e.severity === 'low' ? 'success' : 'info'} severity-badge">${e.severity}</span>
-                            <span class="badge bg-secondary severity-badge ms-1">${e.event_type}</span>
+                            <span class="badge bg-secondary severity-badge">${e.event_type}</span>
+                            ${(e.tags && e.tags.length) ? e.tags.map(t => `<span class="badge" style="font-size:.55rem;background:#1e2a45;color:#94a3b8;border:1px solid #2a3a60;text-transform:lowercase;">${esc(t)}</span>`).join('') : ''}
                         </div>
+                        <div class="d-flex align-items-center gap-1">
                             <small class="event-meta">${date}</small>
+                            <button class="btn btn-outline-info btn-sm py-0 px-1" onclick="linkDocsToEvent(${e.id})" title="Link documents" style="font-size:.65rem;"><i class="fas fa-link"></i></button>
+                            <button class="btn btn-outline-danger btn-sm py-0 px-1" onclick="deleteEvent(${e.id}, this)" title="Delete event" style="font-size:.65rem;"><i class="fas fa-trash-alt"></i></button>
                         </div>
-                    <h6 class="event-title mt-1 mb-1">${esc(e.title)}</h6>
-                    ${e.description ? '<p class="mb-1 small text-secondary">' + renderDocLinks(e.description) + '</p>' : ''}
-                    ${renderTimelineTags(e.tags)}
-                    <div class="d-flex justify-content-between align-items-center mt-1">
+                    </div>
+                    <h6 class="event-title mb-0 mt-1">${esc(e.title)}</h6>
+                    ${e.description ? '<p class="mb-0 small text-secondary">' + renderDocLinks(e.description) + '</p>' : ''}
                     <div class="doc-links-inline" id="docLinks-${e.id}">${renderInlineDocLinks(e.description || '')}</div>
-                        <div>
-                            <button class="btn btn-outline-info btn-sm py-0 px-1" onclick="linkDocsToEvent(${e.id})" title="Link documents" style="font-size:.7rem;"><i class="fas fa-link me-1"></i>Docs</button>
-                            <button class="btn btn-outline-danger btn-sm py-0 px-1" onclick="deleteEvent(${e.id}, this)" title="Delete event" style="font-size:.7rem;"><i class="fas fa-trash"></i></button>
-                        </div>
-                    </div>
-                    <div class="attachments-list mt-1" id="attachments-${e.id}" data-event-id="${e.id}"></div>
-                    <div class="mt-2" id="comments-${e.id}">
-                        <div class="d-flex align-items-center mb-1"><small class="text-secondary fw-bold"><i class="fas fa-comment-dots me-1"></i>Comments ${e.comments && e.comments.length ? '(' + e.comments.length + ')' : ''}</small></div>
+                    <div class="attachments-list" id="attachments-${e.id}" data-event-id="${e.id}"></div>
+                    <div class="mt-1" id="comments-${e.id}">
+                        ${(e.comments && e.comments.length) ? `<div class="d-flex align-items-center mb-1"><small class="text-secondary fw-bold" style="font-size:.7rem;"><i class="fas fa-comment-dots me-1"></i>Comments (${e.comments.length})</small></div>` : ''}
                         <div class="comment-log">${renderComments(e)}</div>
                         <div class="input-group input-group-sm comment-input-group mt-1">
                             <input type="text" class="form-control form-control-sm comment-input" placeholder="Write a comment..." onkeydown="if(event.key===\'Enter\') addComment(${e.id}, this)">
@@ -343,10 +459,45 @@ function renderTimeline() {
         </div>`;
     }).join('');
 
-    filtered.forEach(e => {
-        const container = document.getElementById('attachments-' + e.id);
-        if (container) renderAttachments(e.id, container);
+    const wrapper = document.createElement('div');
+    wrapper.innerHTML = html;
+
+    const fragment = document.createDocumentFragment();
+    while (wrapper.firstChild) fragment.appendChild(wrapper.firstChild);
+    container.appendChild(fragment);
+
+    renderedCount = next;
+
+    batch.forEach(e => {
+        const el = document.querySelector(`.timeline-item[data-event-id="${e.id}"] .attachments-list`);
+        if (el) renderAttachments(e.id, el);
     });
+
+    if (renderedCount < filteredEvents.length) {
+        const sentinel = document.createElement('div');
+        sentinel.id = 'timeline-sentinel';
+        sentinel.className = 'text-center py-3';
+        sentinel.innerHTML = '<button class="btn btn-outline-primary btn-sm" onclick="renderMoreEvents()"><i class="fas fa-chevron-down me-1"></i>Load more (' + (filteredEvents.length - renderedCount) + ' remaining)</button>';
+        container.appendChild(sentinel);
+        observeSentinel();
+    }
+}
+
+let sentinelObserver = null;
+let suppressNextMouse = 0;
+
+function observeSentinel() {
+    if (sentinelObserver) sentinelObserver.disconnect();
+    const sentinel = document.getElementById('timeline-sentinel');
+    if (!sentinel) return;
+    sentinelObserver = new IntersectionObserver((entries) => {
+        if (entries[0].isIntersecting && !isLoadingMore) {
+            isLoadingMore = true;
+            renderMoreEvents();
+            isLoadingMore = false;
+        }
+    }, { rootMargin: '200px' });
+    sentinelObserver.observe(sentinel);
 }
 
 function renderDocLinks(text) {
@@ -361,13 +512,15 @@ function renderDocLinks(text) {
 }
 
 function renderInlineDocLinks(desc) {
-    const ids = extractDocIdsFromDesc(desc);
-    if (!ids.length) return '';
-    const labels = ids.map(id => {
-        const d = documents.find(x => x.id == id);
-        return d ? `<a href="#" onclick="event.preventDefault();openDocument(${id})" class="doc-link-badge" style="display:inline-block;padding:1px 6px;margin:1px;border-radius:3px;background:var(--neptune-accent);color:#fff;font-size:.65rem;text-decoration:none;">${esc(d.title)}</a>` : '';
-    }).join('');
-    return labels ? '<small class="text-secondary me-1"><i class="fas fa-file-alt me-1"></i></small>' + labels : '';
+    const re = /\[doc:(\d+)\](.*?)\[\/doc\]/g;
+    const labels = [];
+    let m;
+    while ((m = re.exec(desc)) !== null) {
+        const id = parseInt(m[1]);
+        const title = m[2];
+        labels.push(`<a href="#" onclick="event.preventDefault();openDocument(${id})" class="doc-link-badge" style="display:inline-block;padding:1px 6px;margin:1px;border-radius:3px;background:var(--neptune-accent);color:#fff;font-size:.65rem;text-decoration:none;">${esc(title)}</a>`);
+    }
+    return labels.length ? '<small class="text-secondary me-1"><i class="fas fa-file-alt me-1"></i></small>' + labels.join('') : '';
 }
 
 function openDocument(id) {
@@ -458,7 +611,7 @@ async function saveLinkDocs() {
 }
 
 function renderComments(event) {
-    if (!event.comments || !event.comments.length) return '<div class="text-secondary small py-1"><i class="fas fa-comment me-1"></i>No comments yet</div>';
+    if (!event.comments || !event.comments.length) return '';
     return event.comments.map(c => `
         <div class="comment-box d-flex">
             <div class="me-2 text-secondary" style="font-size:.7rem;"><i class="fas fa-user-circle"></i></div>
@@ -527,13 +680,20 @@ async function renderAttachments(eventId, container) {
     container.innerHTML = attachments.map(a => {
         const icon = getFileIcon(a.mime_type, a.original_name);
         const size = formatFileSize(a.file_size);
+        const ext = a.original_name.split('.').pop().toLowerCase();
+        const viewable = ['txt', 'md', 'csv'].includes(ext);
+        const href = viewable ? '#' : '/download/?file=' + encodeURIComponent(a.stored_name) + '&mode=download';
+        const onclick = viewable ? ` onclick="event.preventDefault();openFileViewer('${esc(a.stored_name)}','${esc(a.original_name)}')"` : '';
         return `<div class="attachment-item d-flex align-items-center justify-content-between py-1">
-            <div class="d-flex align-items-center">
-                <i class="fas ${icon} me-2" style="font-size:.85rem;"></i>
-                <a href="/uploads/${a.stored_name}" target="_blank" class="small text-decoration-none" style="word-break:break-all;">${esc(a.original_name)}</a>
-                <small class="text-secondary ms-2">(${size})</small>
+            <div class="d-flex align-items-center" style="min-width:0;">
+                <i class="fas ${icon} me-2" style="font-size:.85rem;flex-shrink:0;"></i>
+                <a href="${href}"${onclick} target="_blank" class="small text-decoration-none text-truncate" style="color:var(--neptune-accent);">${esc(a.original_name)}</a>
+                <small class="text-secondary ms-2 flex-shrink-0">(${size})</small>
+            </div>
+            <div class="d-flex align-items-center gap-1 flex-shrink-0">
+                <a href="/download/?file=${encodeURIComponent(a.stored_name)}&mode=download" class="btn btn-outline-primary btn-sm py-0 px-1" title="Download" style="font-size:.6rem;"><i class="fas fa-download"></i></a>
+                <button class="btn btn-outline-danger btn-sm py-0 px-1" onclick="deleteAttachment(${a.id}, this)" title="Delete file" style="font-size:.6rem;"><i class="fas fa-times"></i></button>
             </div>
-            <button class="btn btn-outline-danger btn-sm py-0 px-1 ms-2" onclick="deleteAttachment(${a.id}, this)" title="Delete file" style="font-size:.65rem;"><i class="fas fa-times"></i></button>
         </div>`;
     }).join('');
 }
@@ -557,6 +717,41 @@ function getFileIcon(mime, name) {
     return 'fa-file';
 }
 
+function openFileViewer(storedName, originalName) {
+    const modalEl = document.getElementById('fileViewerModal');
+    document.getElementById('fileViewerName').textContent = originalName;
+    document.getElementById('fileViewerDownloadBtn').onclick = () => {
+        window.open('/download/?file=' + encodeURIComponent(storedName) + '&mode=download', '_blank');
+    };
+    const body = document.getElementById('fileViewerBody');
+    body.innerHTML = '<div class="text-center text-secondary py-5"><div class="spinner-border" role="status"></div><p class="mt-2 small">Loading file...</p></div>';
+
+    const modal = new bootstrap.Modal(modalEl);
+    modal.show();
+
+    const ext = originalName.split('.').pop().toLowerCase();
+    if (ext === 'pdf') {
+        body.innerHTML = `<iframe src="/download/?file=${encodeURIComponent(storedName)}&mode=view" style="width:100%;min-height:80vh;border:none;"></iframe>`;
+        return;
+    }
+
+    fetch('/download/?file=' + encodeURIComponent(storedName) + '&mode=view')
+        .then(r => {
+            if (!r.ok) throw new Error('Failed to load');
+            return r.text();
+        })
+        .then(text => {
+            if (ext === 'md') {
+                body.innerHTML = '<div class="p-3" style="white-space:pre-wrap;font-family:var(--bs-font-monospace);font-size:.85rem;line-height:1.6;color:#e2e8f0;">' + esc(text) + '</div>';
+            } else {
+                body.innerHTML = '<div class="p-3" style="white-space:pre-wrap;font-family:var(--bs-font-monospace);font-size:.85rem;line-height:1.6;color:#e2e8f0;">' + esc(text) + '</div>';
+            }
+        })
+        .catch(() => {
+            body.innerHTML = '<div class="text-center text-danger py-5"><i class="fas fa-exclamation-circle fs-2 mb-2"></i><p class="small">Failed to load file</p></div>';
+        });
+}
+
 async function saveEvent() {
     const tags = parseEventTags();
     const data = {
@@ -621,6 +816,9 @@ async function loadNetworkData() {
     populateNodeSelects();
     renderNodeList();
     renderShapeList();
+    renderNodeToolbar();
+    setupCanvasClickCreate();
+    startSync();
     if (shapes.length) nextShapeZ = Math.max(...shapes.map(x => x.z_index)) + 1;
     buildCanvasGraph();
     renderNetwork();
@@ -1039,6 +1237,73 @@ function getShapeHandles(s) {
     ];
 }
 
+function renderNodeToolbar() {
+    const bar = document.getElementById('nodeToolbar');
+    if (!bar) return;
+    const iconMap = [
+        { type: 'host', icon: 'fa-desktop', color: '#3b82f6', label: 'Host' },
+        { type: 'server', icon: 'fa-server', color: '#8b5cf6', label: 'Server' },
+        { type: 'router', icon: 'fa-route', color: '#f59e0b', label: 'Router' },
+        { type: 'firewall', icon: 'fa-shield-halved', color: '#ef4444', label: 'Firewall' },
+        { type: 'switch', icon: 'fa-network-wired', color: '#06b6d4', label: 'Switch' },
+        { type: 'cloud', icon: 'fa-cloud', color: '#22c55e', label: 'Cloud' },
+        { type: 'endpoint', icon: 'fa-laptop', color: '#ec4899', label: 'Endpoint' },
+        { type: 'other', icon: 'fa-circle', color: '#6b7280', label: 'Other' },
+        { type: 'shape:rectangle', icon: 'fa-vector-square', color: '#3b82f6', label: 'Box', isShape: true },
+        { type: 'shape:ellipse', icon: 'fa-circle', color: '#3b82f6', label: 'Ellipse', isShape: true },
+    ];
+    bar.innerHTML = '<span class="text-secondary me-1 small" style="font-size:.7rem;line-height:26px;">Click item then click canvas:</span>';
+    iconMap.forEach(t => {
+        const el = document.createElement('span');
+        el.className = 'd-inline-flex align-items-center gap-1 px-2 py-1 rounded';
+        el.style.cssText = 'cursor:pointer;font-size:.75rem;color:' + t.color + ';background:' + t.color + '12;border:1px solid ' + t.color + '30;';
+        el.innerHTML = '<i class="fas ' + t.icon + '" style="font-size:.75rem;"></i><span>' + t.label + '</span>';
+        el.addEventListener('click', () => {
+            bar.querySelectorAll('.d-inline-flex').forEach(s => s.style.outline = 'none');
+            el.style.outline = '2px solid ' + t.color;
+            pendingCanvasCreate = t.type;
+        });
+        bar.appendChild(el);
+    });
+}
+
+function setupCanvasClickCreate() {
+    const wrapper = document.getElementById('networkCanvasWrapper');
+    if (wrapper.dataset.clickCreate) return;
+    wrapper.dataset.clickCreate = '1';
+    const bar = document.getElementById('nodeToolbar');
+    wrapper.addEventListener('click', async (e) => {
+        if (!pendingCanvasCreate) return;
+        if (e.target !== canvas && e.target !== wrapper) return;
+        const rect = canvas.getBoundingClientRect();
+        const mx = e.clientX - rect.left - panX;
+        const my = e.clientY - rect.top - panY;
+        const type = pendingCanvasCreate;
+        pendingCanvasCreate = null;
+        if (bar) bar.querySelectorAll('.d-inline-flex').forEach(s => s.style.outline = 'none');
+
+        if (type.startsWith('shape:')) {
+            const shapeType = type.split(':')[1];
+            await apiFetch('shapes', { method: 'POST', body: JSON.stringify({
+                label: shapeType === 'rectangle' ? 'Box' : 'Ellipse',
+                shape_type: shapeType,
+                pos_x: mx - 100, pos_y: my - 75,
+                width: 200, height: 150,
+                color: '#1e3a5f', border_color: '#3b82f6',
+                opacity: 0.15, z_index: nextShapeZ++
+            })});
+        } else {
+            await apiFetch('nodes', { method: 'POST', body: JSON.stringify({
+                label: type.charAt(0).toUpperCase() + type.slice(1),
+                ip_address: '', node_type: type || 'host', status: 'unknown',
+                group_name: 'default', notes: '',
+                pos_x: mx, pos_y: my
+            })});
+        }
+        await loadNetworkData();
+    });
+}
+
 function getCanvasNodeAt(mx, my) {
     return canvasNodes.find(n => Math.hypot(mx - n.x, my - n.y) < 28);
 }
@@ -1062,6 +1327,15 @@ function getShapeResizeHandleAt(mx, my) {
 }
 
 function onMouseDown(e) {
+    if (e.button === 2) {
+        isPanning = true;
+        panStartX = e.clientX;
+        panStartY = e.clientY;
+        canvas.style.cursor = 'grabbing';
+        return;
+    }
+    if (e.button !== 0) return;
+    if (Date.now() < suppressNextMouse) return;
     const rect = canvas.getBoundingClientRect();
     const mx = e.clientX - rect.left - panX;
     const my = e.clientY - rect.top - panY;
@@ -1077,6 +1351,7 @@ function onMouseDown(e) {
         if (e.shiftKey) { selectNode(node.id, true); }
         else if (!selectedNodeIds.includes(node.id)) { selectNode(node.id); }
         dragType = 'node'; dragTarget = node;
+        dragNodeIds = [...selectedNodeIds];
         dragOffX = mx - node.x; dragOffY = my - node.y;
         return;
     }
@@ -1084,13 +1359,15 @@ function onMouseDown(e) {
     if (shape) {
         selectedNodeId = null; selectedNodeIds = []; selectedShapeId = shape.id;
         dragType = 'shape'; dragTarget = shape;
+        dragShapeId = shape.id;
         dragOffX = mx - shape.x; dragOffY = my - shape.y;
         renderNodeList(); renderShapeList();
         const resizeNow = getShapeResizeHandleAt(mx, my);
         if (resizeNow) {
             dragType = 'resize'; dragTarget = resizeNow.shape;
+            dragShapeId = resizeNow.shape.id;
+            dragOrigShape = { x: resizeNow.shape.x, y: resizeNow.shape.y, w: resizeNow.shape.w, h: resizeNow.shape.h, cx: resizeNow.cx, cy: resizeNow.cy };
             dragOffX = mx; dragOffY = my;
-            dragOrig = { x: resizeNow.shape.x, y: resizeNow.shape.y, w: resizeNow.shape.w, h: resizeNow.shape.h, cx: resizeNow.cx, cy: resizeNow.cy };
         }
         return;
     }
@@ -1103,21 +1380,25 @@ function onMouseDown(e) {
 
 function onMouseMove(e) {
     const rect = canvas.getBoundingClientRect();
-    if (dragType === 'node' && dragTarget) {
+    if (dragType === 'node' && dragNodeIds) {
         const dx = e.clientX - rect.left - panX - dragOffX - dragTarget.x;
         const dy = e.clientY - rect.top - panY - dragOffY - dragTarget.y;
-        for (const c of canvasNodes) { if (selectedNodeIds.includes(c.id)) { c.x += dx; c.y += dy; } }
+        for (const c of canvasNodes) { if (dragNodeIds.includes(c.id)) { c.x += dx; c.y += dy; } }
         renderNetwork(); return;
     }
-    if (dragType === 'shape' && dragTarget) {
-        dragTarget.x = e.clientX - rect.left - panX - dragOffX;
-        dragTarget.y = e.clientY - rect.top - panY - dragOffY;
+    if (dragType === 'shape' && dragShapeId) {
+        const s = canvasShapes.find(x => x.id === dragShapeId);
+        if (!s) return;
+        s.x = e.clientX - rect.left - panX - dragOffX;
+        s.y = e.clientY - rect.top - panY - dragOffY;
         renderNetwork(); return;
     }
-    if (dragType === 'resize' && dragTarget) {
+    if (dragType === 'resize' && dragShapeId) {
+        const s = canvasShapes.find(x => x.id === dragShapeId);
+        if (!s) return;
         const dx = e.clientX - rect.left - panX - dragOffX;
         const dy = e.clientY - rect.top - panY - dragOffY;
-        const s = dragTarget; const o = dragOrig;
+        const o = dragOrigShape;
         let nx = o.x, ny = o.y, nw = o.w, nh = o.h;
         if (o.cx === 0) { nx = o.x + dx; nw = o.w - dx; } else { nw = o.w + dx; }
         if (o.cy === 0) { ny = o.y + dy; nh = o.h - dy; } else { nh = o.h + dy; }
@@ -1136,7 +1417,10 @@ function onMouseMove(e) {
         renderNetwork(); return;
     }
     if (isPanning) {
-        panX = e.clientX - panStartX; panY = e.clientY - panStartY;
+        panX += e.clientX - panStartX;
+        panY += e.clientY - panStartY;
+        panStartX = e.clientX;
+        panStartY = e.clientY;
         renderNetwork(); return;
     }
     const mx = e.clientX - rect.left - panX;
@@ -1147,10 +1431,14 @@ function onMouseMove(e) {
 }
 
 function onMouseUp(e) {
-    if (dragType === 'node') {
-        for (const c of canvasNodes) { if (selectedNodeIds.includes(c.id)) apiFetch('nodes/' + c.id, { method: 'PUT', body: JSON.stringify({ pos_x: c.x, pos_y: c.y }) }); }
-    } else if (dragTarget && (dragType === 'shape' || dragType === 'resize')) {
-        apiFetch('shapes/' + dragTarget.id, { method: 'PUT', body: JSON.stringify({ pos_x: dragTarget.x, pos_y: dragTarget.y, width: dragTarget.w, height: dragTarget.h }) });
+    if (dragType === 'node' && dragNodeIds) {
+        for (const id of dragNodeIds) {
+            const c = canvasNodes.find(n => n.id === id);
+            if (c) apiFetch('nodes/' + id, { method: 'PUT', body: JSON.stringify({ pos_x: c.x, pos_y: c.y }) });
+        }
+    } else if (dragShapeId && (dragType === 'shape' || dragType === 'resize')) {
+        const s = canvasShapes.find(x => x.id === dragShapeId);
+        if (s) apiFetch('shapes/' + dragShapeId, { method: 'PUT', body: JSON.stringify({ pos_x: s.x, pos_y: s.y, width: s.w, height: s.h }) });
     } else if (dragType === 'select') {
         selectRect = null;
         const rect = canvas.getBoundingClientRect();
@@ -1161,14 +1449,18 @@ function onMouseUp(e) {
         const rw = Math.abs(mx - selectStartX);
         const rh = Math.abs(my - selectStartY);
         if (rw > 5 || rh > 5) {
-            const found = canvasNodes.filter(n => n.x >= rx && n.x <= rx + rw && n.y >= ry && n.y <= ry + rh);
-            selectedNodeIds = found.map(n => n.id);
-            selectedNodeId = found.length > 0 ? found[0].id : null;
-            selectedShapeId = null;
+            const foundNodes = canvasNodes.filter(n => n.x >= rx && n.x <= rx + rw && n.y >= ry && n.y <= ry + rh);
+            const foundShapes = canvasShapes.filter(s => {
+                const sx = s.x, sy = s.y, ex = s.x + s.w, ey = s.y + s.h;
+                return sx < rx + rw && ex > rx && sy < ry + rh && ey > ry;
+            });
+            selectedNodeIds = foundNodes.map(n => n.id);
+            selectedNodeId = foundNodes.length > 0 ? foundNodes[0].id : null;
+            selectedShapeId = foundShapes.length > 0 ? foundShapes[foundShapes.length - 1].id : null;
             renderNodeList(); renderShapeList(); renderNetwork();
         }
     }
-    dragType = null; dragTarget = null; dragOrig = null;
+    dragType = null; dragTarget = null; dragOrig = null; dragNodeIds = null; dragShapeId = null; dragOrigShape = null;
     selectRect = null;
     isPanning = false;
     canvas.style.cursor = 'grab';
@@ -1179,9 +1471,9 @@ function onDblClick(e) {
     const mx = e.clientX - rect.left - panX;
     const my = e.clientY - rect.top - panY;
     const node = getCanvasNodeAt(mx, my);
-    if (node) { selectNode(node.id); return; }
+    if (node) { editSelectedNode(node.id); return; }
     const shape = getShapeAt(mx, my);
-    if (shape) { selectedNodeId = null; selectedShapeId = shape.id; renderShapeList(); renderNetwork(); }
+    if (shape) { editSelectedShape(shape.id); }
 }
 
 function esc(s) {
@@ -1267,6 +1559,7 @@ document.getElementById('registrationToggle').addEventListener('change', saveReg
 async function loadDocuments() {
     try {
         documents = await apiFetch('documents');
+        syncHashes.documents = JSON.stringify(documents);
     } catch (e) {
         documents = [];
     }

frontend/index.html

@@ -90,7 +90,7 @@
             <div class="row mb-3">
                 <div class="col-md-6">
                     <h4><i class="fas fa-project-diagram text-primary"></i> Network Map</h4>
-                    <small class="text-secondary">Drag nodes & shapes &middot; Resize via corner handles &middot; <kbd class="bg-dark text-secondary">Del</kbd> to delete</small>
+                    <small class="text-secondary">Drag nodes & shapes &middot; Resize via corner handles &middot; <kbd class="bg-dark text-secondary">Del</kbd> to delete &middot; Right-click to pan</small>
                 </div>
                 <div class="col-md-6 text-end">
                     <button class="btn btn-primary btn-sm" data-bs-toggle="modal" data-bs-target="#nodeModal">
@@ -108,10 +108,13 @@
             <div class="row">
                 <div class="col-md-9">
                     <div class="card bg-dark border-secondary">
-                        <div class="card-body p-0" id="networkCanvasWrapper" style="height: 70vh; position: relative; overflow: hidden;">
+                        <div class="card-body p-0" id="networkCanvasWrapper" style="height: 65vh; position: relative; overflow: hidden;">
                             <canvas id="networkCanvas" style="width: 100%; height: 100%;"></canvas>
                         </div>
                     </div>
+                    <div class="d-flex flex-wrap gap-1 mt-1 p-1 rounded" style="background:#0d1117;border:1px solid var(--neptune-border);" id="nodeToolbar">
+                        <span class="text-secondary me-1 small" style="font-size:.7rem;line-height:26px;">Drag to canvas:</span>
+                    </div>
                 </div>
                 <div class="col-md-3">
                     <div class="card bg-dark border-secondary mb-2">
@@ -138,10 +141,10 @@
 
                     <div class="tab-content">
                         <div class="tab-pane fade show active" id="nodesPanel">
-                            <div class="list-group list-group-flush bg-dark border-secondary rounded" id="nodeList" style="max-height: 35vh; overflow-y: auto;"></div>
+                            <div class="list-group list-group-flush bg-dark border-secondary rounded" id="nodeList" style="max-height: 30vh; overflow-y: auto;"></div>
                         </div>
                         <div class="tab-pane fade" id="shapesPanel">
-                            <div class="list-group list-group-flush bg-dark border-secondary rounded" id="shapeList" style="max-height: 35vh; overflow-y: auto;"></div>
+                            <div class="list-group list-group-flush bg-dark border-secondary rounded" id="shapeList" style="max-height: 30vh; overflow-y: auto;"></div>
                         </div>
                     </div>
                 </div>
@@ -253,7 +256,7 @@
                     </div>
                     <div class="mb-2">
                         <label class="form-label small">File Attachments</label>
-                        <input type="file" class="form-control form-control-sm" id="eventFileInput" multiple>
+                        <input type="file" class="form-control form-control-sm" id="eventFileInput" multiple accept=".pdf,.md,.txt,.docx,.xlsx,.csv,.pptx,.evidence">
                         <div id="eventFilePreview" class="mt-1"></div>
                     </div>
                 </form>
@@ -527,6 +530,24 @@
     </div>
 </div>
 
+<!-- ==================== FILE VIEWER MODAL ==================== -->
+<div class="modal fade" id="fileViewerModal" tabindex="-1">
+    <div class="modal-dialog modal-xl modal-dialog-centered modal-dialog-scrollable">
+        <div class="modal-content bg-dark">
+            <div class="modal-header border-secondary py-2">
+                <h6 class="modal-title" id="fileViewerTitle"><i class="fas fa-file me-1"></i> <span id="fileViewerName"></span></h6>
+                <div class="d-flex align-items-center gap-1">
+                    <button type="button" class="btn btn-outline-primary btn-sm" id="fileViewerDownloadBtn"><i class="fas fa-download me-1"></i>Download</button>
+                    <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+                </div>
+            </div>
+            <div class="modal-body p-0" id="fileViewerBody" style="min-height:60vh;max-height:80vh;overflow:auto;background:#0d1117;">
+                <div class="text-center text-secondary py-5"><div class="spinner-border" role="status"></div><p class="mt-2 small">Loading file...</p></div>
+            </div>
+        </div>
+    </div>
+</div>
+
 <!-- ==================== LOGIN OVERLAY ==================== -->
 <div id="loginOverlay" style="position:fixed;top:0;left:0;width:100%;height:100%;background:#0a0e1a;z-index:9999;display:flex;align-items:center;justify-content:center;">
     <div style="text-align:center;max-width:400px;padding:2rem;">