[anurag629]

Gets dev ready for the 1.0 release candidate.

• .changeset/pre.json (pnpm changeset pre enter rc): the next version PR makes 1.0.0-rc.0 for core, server and widget and publishes it under the npm rc tag. npm install @chatcops/widget keeps getting 0.x until the final 1.0, and anyone trying the RC installs @chatcops/widget@rc. Running pnpm changeset pre exit later turns the next release into plain 1.0.0.
• Peer-dependent bumps: as at v0.8, changesets also wants to major-bump cli, ingest and the stores, since they peer-depend on core. I'll set their versions by hand on the version PR.
• Docs bot index: rebuilt (29 pages, 296 chunks) for the docs changed since the last rebuild (feat(server)!: require session tokens by default, with allowAnonymous to opt out #462, docs: keep the 0.5 stream format through 1.x, and say so #467, docs: Node req/res bridge, runTurn options, and what the CLI's API is #470), and the evals re-recorded. Replay passes 9 of 9, citations 49 of 50 (98%). The recordings pass the key scan.

Live smoke on 1.0 dev passed on all three providers: ingest and re-ingest, hybrid recall@5 1.00, citations on each provider, Japanese retrieval, the injection fixture over 20 runs, and text, tools, parallel tools and abort. The prompt cache read was checked at the provider level (20,815 tokens on the second request), as at v0.8, since the finish part on the wire carries only input and output tokens.