v267

This is huge release with @JaredHatfield contributing a new capacity based router!

Rather than defining which models fit with other models, the capacity router
allows declaring pools of resources and how much of each resource a model needs.
The new router will automatically evict models to free up enough capacity to
load the new model. For use cases that have a big combinations of models
that can run concurrently, the new router can eliminate a lot of manual
configuration work.

The other big feature is the Help Agent in the UI can now search llama-swap's
source code as well as its knowledge base. Every release of llama-swap includes
the source code it was built from (tests excluded). This is handy for answering
questions about how llama-swap actually works and a knowledge base article
does not exist. One step closer to the singularity!

If you want to try out the new router ask the Help Agent to generate a configuration
example using your existing configuration. Did you know, it can do that!? :)

• PR #1242 router: add capacity-based model eviction: adds a capacity router where user-defined pools bound which models can be resident together and evict_cost picks what to unload when a model no longer fits, replacing the need to hand-maintain every valid combination in the matrix on systems with lots of unified memory (#1004) by @JaredHatfield
• PR #1258 docs/kb: add guides/tools for the cmd/ programs: adds knowledge base articles for wol-proxy, fake-model and vllm-wrapper (and moves the kubeswap guide under guides/tools) so the Help chat can answer questions about the tools in the llama-swap ecosystem, plus a convention for keeping each tool's README and article in sync by @mostlygeek
• PR #1259 internal/mcptools: add code search to Help agent: gives the Docs agent code__grep, code__read, code__find and code__ls so it can verify knowledge base articles against the code that implements them, adds helpagent.disable to hide Help and stop serving /api/mcp, and raises the agent loop's max iterations from 16 to 96 so the extra tool calls do not end the answer early by @mostlygeek
• PR #1265 internal/mcptools: embed source for code tools instead of git: embeds the Go and TypeScript source (without tests) in the binary via the new embed_src build tag and reads it through fs.FS, because the runtime git checkout made the code tools fail on installs without the git command line tool; code__status and code__update are removed by @mostlygeek