[opencode-agent]

Bumps Bun from 1.3.14 to 1.4.4 on v1, so v1 builds and ships on the same Bun as dev (#58087). This moves v1 from the last 1.3.x release to Bun 1.4.

• packageManager, bun-node and stats server images → 1.4.4
• @types/bun catalog 1.3.13 → 1.4.3 (latest published), plus a bun-types override pinned to 1.4.4 so types track the runtime, as on dev since chore: upgrade Bun to 1.4.1 and re-enable bytecode #47271
• Adds bun-types to minimumReleaseAgeExcludes: Oven publishes it alongside each Bun release, so the 3-day gate otherwise blocks a same-day bump
• Drops the Windows-only V=1.4.2 override in setup-bun: it existed because 1.3.14 lacked the install: don't re-apply a patch per peer variant in isolated installs oven-sh/bun#33646 fix, and with 1.4.4 it would downgrade Windows
• Updates the Bun version in the timeline playground story fixture, as in previous bumps
• bun.lock regenerated with Bun 1.4.4. Only @types/bun and bun-types change in the resolved package set; the rest is re-hoisting

Backports dev's Bun 1.4 changes:

• chore(nix): update nixpkgs for Bun 1.4 #50221 and fix(nix): drop x86_64-darwin target and unblock flake eval on nixpkgs 26.11 #52129: newer nixpkgs, so Nix computes node_modules hashes with Bun 1.4, and drops the x86_64-darwin target that nixpkgs 26.11 removed. The hashes workflow refreshes nix/hashes.json after merge
• fff 0.10.5: Bun 1.4's FFI typings return Pointer | bigint, and @ff-labs/fff-bun@0.9.4 ships raw TypeScript source, so core failed typecheck. Upgrades to 0.10.5, the version dev ships, whose compiled type definitions avoid this. The core API is unchanged (no source edits; core typechecks), and lockfile integrity hashes match dev. It also brings fff's wildcard gitignore fix (fix(core): honor wildcard gitignore rules in FFF #43988)
• Same photon-node patch context and Solid unit-test preload fixes as chore: bump Bun to 1.4.4 #58087
• The websocket upgrade rejection test now expects Unexpected server response: 401. Under 1.4, ws no longer gets Bun's built-in WebSocket replacement; the codex proxy path still tunnels through HTTP(S)_PROXY

Checked with 1.3.14 and 1.4.4: fresh frozen install, ui 27/27, session-ui 83/83, app unit 724/724, and matching opencode plugin/provider/tool/util/session test results apart from the websocket message. Compiled linux-x64 binaries smoke the same before and after: serve plus config/agent/project/session/doc endpoints, run --attach, run against a free model including a tool call, models and session list. The binary grows 187.3 → 207.2 MB, mostly from the larger Bun runtime.

Requested by: @Hona (Hona via Slack)