docs: update remote MCP reconnect, thinking runtime cycling, distribution, and Go SDK docs

[aheritier]

Documentation updates

This PR updates five areas of the docs to reflect code changes merged into main in the last 36 hours.

Commit	Source PR	What changed
dc84089	#3064	Document automatic idle-reconnect for remote MCP toolsets
774ebef	#3067	Document Shift+Tab runtime thinking-level cycling
ec033c7	#3075	Document http://localhost URL support for local agent dev
5ea48dc	#3077	Document automatic Docker Desktop JWT for .docker.com registries
b145dae	#3081	Add pkg/tui/components/transcript to Go SDK core packages

Details

Remote MCP idle reconnection (#3064)

Remote MCP servers (Streamable HTTP / SSE) now reconnect automatically after idle connection closes, not just after failures. Updated three files:

• docs/configuration/tools/index.md — extended the restart table row to note that on_failure is auto-promoted to always for remote MCP; never still honored.
• docs/features/remote-mcp/index.md — added a callout explaining automatic reconnection after idle timeouts, with a link to lifecycle tuning.
• docs/tools/mcp/index.md — updated the Lifecycle section to call out idle/clean closes alongside crashes.

Shift+Tab thinking-level cycling (#3067)

The keyboard shortcut was already listed in the TUI shortcuts table but had no prose explanation. Added a "Changing Thinking Level at Runtime" section to docs/guides/thinking/index.md covering: cycling with Shift+Tab, provider-specific ranges with wrap-around, sidebar display, session-only scope (not saved to config), and no-op behaviour on unsupported models/remote runtimes.

Localhost HTTP URL for local dev (#3075)

Added a "Local Development" section to docs/concepts/distribution/index.md showing docker agent run http://localhost:PORT/agent.yaml for testing against locally-served agent configs.

Docker Desktop JWT for .docker.com registries (#3077)

Added a callout inside the "Private Repositories" section of docs/concepts/distribution/index.md noting that docker-agent auto-forwards the Docker Desktop JWT when pulling from .docker.com URLs — no explicit docker login needed when Docker Desktop is running.

pkg/tui/components/transcript in Go SDK docs (#3081)

Added a row for pkg/tui/components/transcript to the Core Packages table in docs/guides/go-sdk/index.md, and a bullet in the "Embedding TUI Components" section describing Messages() as a read-only accessor for host-side tests and persistence layers.

PRs reviewed and found up to date

Source PR	Reason
#3080	TUI embedding helpers — covered by previous docs PR #3068
#3079	CHANGELOG v1.78.0 — automated release update
#3076	Dependency bumps — no user-facing API or behaviour change
#3072	Internal bug fix (ScriptToolSet panic guard) — no config/API change
#3070	Internal bug fix (elicitation channel race) — no user-facing behaviour change
#3068	Docs PR itself
#3065	Docs PR itself (remote MCP transport migration)
#3061	CHANGELOG v1.76.0 — automated release update

[docker-agent]

Assessment: 🟡 NEEDS ATTENTION

Documentation update with 1 confirmed medium issue and 1 low-severity concern in the changed lines.

Severity	Count
🟡 MEDIUM (CONFIRMED)	1
🔵 LOW (LIKELY)	1

[docker-agent]

Assessment: 🟡 NEEDS ATTENTION

Documentation-only PR updating 6 markdown files. Two factual inconsistencies found in added lines.