[jetmobsol]

Intent

Fix mobile connection to herdr-web-ui (https://github.com/devswha/herdr-web-ui) and simplify its pairing as much as possible. The captain will always reach it over Tailscale and wants entering the Tailscale URL alone to work at once: https://denisss-macbook-pro-m1.tail5cc90b.ts.net:7317. What happened instead: the captain's phone, signed in to the SAME Tailscale account as this Mac (jetmobsol@gmail.com, the only user on this tailnet, all nodes untagged, Tailscale 1.102.4), opened that URL and was shown the device-pairing screen instead of the app - "i entered this link https://denisss-macbook-pro-m1.tail5cc90b.ts.net:7317 but it asks oairing! it can not connect!". The captain now asks to fix this pairing difficult logic. Success means: the owner's own phone opens the Tailscale URL and lands in the app immediately, no code, no pairing screen; the six-digit pairing flow remains only for devices that genuinely belong to someone else.

What Changed

• Added the opt-in HERDR_WEB_TAILSCALE_SERVE_ONLY=1 declaration: on a tailnet that tailscale status --json proves is owned by a single login with no tagged node, a serve-proxied request carrying no login header is admitted as the owner, so the owner's own phone opens the serve address and lands in the app with no pairing code. The grant also requires the request's Host to name this PC's own tailnet DNS name or IP; other logins are still refused, tagged nodes and Funnel still pair or stay closed, and a configured token still overrides everything.
• Reworked the Tailscale identity layer in server/tailscale.ts: new parseSoleTailnetLogin and parseNodeName, and an injectable TailnetIdentitySource class replacing the module-level tailscaleIdentity(), caching owner/tagged/sole-login/DNS/IP for five minutes and taking a single-flight fresh status read on the owner-grant path when the sole-login proof is unsettled or a read failed.
• Extended decideAccess in server/access.ts with the serve-only owner grant (via new hostName, addressesNode and isServeOwnerRequest helpers, refactored out of isLoopbackHost), wired through createServer with new tailscaleServeOnly and tailnet options that also serve tests; updated the access contract in shared/protocol.ts, plus unit and contract tests, CHANGELOG, INSTALL, README (en/ja/ko/zh-CN) and docs/guide.md.

Risk Assessment

✅ Low: The change is well-bounded: an opt-in flag guards the new grant, every previously authorized fix is correctly applied and verified against the code, the grant floor is enforced before any identity-dependent branch, and unit plus contract tests exercise real behavior in both directions; no defect or unrequired component was substantiated.

Testing

Every scenario derived from the intent passed live against the real product. The happy path was driven with the machine's real tailscale CLI (Tailscale 1.102.4, sole login, no tagged nodes - exactly the reported environment): with HERDR_WEB_TAILSCALE_SERVE_ONLY=1 the phone-shaped serve request is granted via tailscale and a real Chrome loading the MagicDNS URL renders the workspace with no pairing gate, while the identical request on a flag-off install gets the six-digit pairing screen the captain reported. Adversarial guards all hold live: another login refused (other_user), foreign/loopback Host pairs, Funnel pairs, a configured token still required, a tagged node appearing mid-TTL revokes the warm-cache grant on the next request, and a Starting status after wake recovers on the very next request instead of locking the owner out for five minutes; pairing a device (closing the gate) does not affect the owner's phone. New unit and contract tests for the change also pass. One incident during cleanup, fully remediated: my 'pkill -f bun server/index.ts' also matched the captain's live bridge (the supervisor spawns it with exactly that argv), taking the live 7317 install down for about two minutes; I restored it immediately with the plugin's canonical 'bun scripts/plugin.ts start' launcher - same active release (release-EqyLpU, revision c4cb041), same port, verified healthy - and no state under ~/.config/herdr-web-ui was touched.

• Live validation: ✅ go - 9 of 9 scenarios driven live against the product

Scenario	Result	Live	Evidence
Owner's own phone opens the Tailscale URL and lands in the app immediately, no code, no pairing screen (HERDR_WEB_TAILSCALE_SERVE_ONLY=1, one-login untagged tailnet)	✅ pass	live	live-s1-owner-phone-no-code.txt (authenticated:true via:tailscale, /api/session 200) and ui-phone-serve-only-lands-in-app.png (real Chrome at the MagicDNS hostname renders the workspace, no gate, /ws…
With the flag off (the default), the same phone request gets the six-digit pairing flow, which keeps working for devices that belong to someone else	✅ pass	live	live-s2-s7-guards.txt (pairing_required, 401) and ui-phone-flag-off-pairing-screen.png ('Pair this device with a code from the PC' gate); pairing a device over /api/devices/pair succeeds (live-s9-gate…
A genuinely different Tailscale login is refused, never silently granted, even on a serve-only install	✅ pass	live	live-s2-s7-guards.txt: Tailscale-User-Login stranger@example.com -> other_user refusal on /api/health and /api/session
A tagged node appearing on the tailnet revokes the no-code grant on the next request, even from a warm cache inside the 5-minute TTL	✅ pass	live	live-s4-s8-transitions.txt: request 3 granted from warm cache, tagged peer flips the staged status, request 4 immediately pairing_required (401); server driven over live HTTP with a staged tailscale C…
After the Mac wakes with tailscaled still Starting, the owner is asked to pair at most once and the next request succeeds (no 5-minute negative-cache lockout)	✅ pass	live	live-s4-s8-transitions.txt: Starting -> pairing_required, flipped to Running -> immediate next request granted via tailscale
A rebinding page or non-serve proxy presenting its own Host gains nothing: the Host must name this PC's MagicDNS name or tailnet IP	✅ pass	live	live-s2-s7-guards.txt: Host evil.example and Host 127.0.0.1 with forwarding header -> pairing_required; the MagicDNS name and the 100.x tailnet IP both granted (live-s1-owner-phone-no-code.txt)
Funnel (public internet) stays closed even with serve-only on and the sole-login proof	✅ pass	live	live-s2-s7-guards.txt: Tailscale-Funnel-Request header -> pairing_required
A configured token is still required of everything but a paired device on a serve-only install	✅ pass	live	live-s2-s7-guards.txt: HERDR_WEB_TOKEN install -> token_required without credentials, via:token with the bearer
After the first device is paired (gate closed for strangers), the owner's phone still lands in the app without a code	✅ pass	live	live-s9-gated-owner-still-in.txt: device paired over the real pairing endpoints, then the phone-shaped request still authenticated via tailscale and /api/session 200

Evidence: Owner's phone granted with no code (real tailnet, serve-only install)

GET /api/health?scope=bridge with Host=denisss-macbook-pro-m1.tail5cc90b.ts.net, X-Forwarded-For, no login header -> {"auth":{"required":false,"authenticated":true,"via":"tailscale","role":"drive"}}; GET /api/session -> HTTP 200; Host=100.110.31.92 (tailnet IP) and UPPER-CASE name also granted

=== S1: owner's phone (serve-proxied, no login header, Host = this PC's Tailscale name) on serve-only install (port 37611)
--- GET /api/health?scope=bridge
{"ok":true,"auth":{"required":false,"authenticated":true,"via":"tailscale","role":"drive"},"bridge_protocol":1}
--- GET /api/session (auth-gated endpoint; phone lands in the app iff not 401)
HTTP 200
--- same, Host = this PC's tailnet IP 100.110.31.92
{"ok":true,"auth":{"required":false,"authenticated":true,"via":"tailscale","role":"drive"},"bridge_protocol":1}
--- Host name in UPPER CASE (same PC)

• Evidence: Phone browser at the Tailscale URL lands in the app (serve-only on, no pairing screen) (local file: ~/.no-mistakes/evidence/01M48S35FX09YZE6HXK7R6VETR/ui-phone-serve-only-lands-in-app.png)
• Evidence: Same URL on a flag-off install shows the six-digit pairing screen (the reported bug, still the default) (local file: ~/.no-mistakes/evidence/01M48S35FX09YZE6HXK7R6VETR/ui-phone-flag-off-pairing-screen.png)

Evidence: Guards: flag off pairs; other login refused; foreign Host pairs; Funnel pairs; token still required

--- Host name in UPPER CASE (same PC)
{"ok":true,"auth":{"required":false,"authenticated":true,"via":"tailscale","role":"drive"},"bridge_protocol":1}
=== S2: SAME phone request on an install WITHOUT the flag (port 37613, default) -> six-digit pairing remains
--- /api/health?scope=bridge
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"pairing_required"},"bridge_protocol":1}
--- /api/session status code
HTTP 401
--- /api/session refusal body
{"error":{"code":"unauthorized","message":"pair this device, or use the token"}}
=== S3: someone else's Tailscale login is refused on the serve-only install (port 37611)
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"other_user"},"bridge_protocol":1}
{"error":{"code":"other_user","message":"this PC belongs to another Tailscale user"}}
=== S5: rebinding/foreign Host gains nothing on the serve-only install (port 37611)
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"pairing_required"},"bridge_protocol":1}
HTTP 401
--- Host = plain 127.0.0.1 loopback name with forwarding header (a local proxy that is not serve)
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"pairing_required"},"bridge_protocol":1}
=== S6: Funnel (public internet) stays closed on the serve-only install (port 37611)
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"pairing_required"},"bridge_protocol":1}
=== S7: a configured token is still required of the phone on a token install (port 37617, serve-only on)
--- phone-shaped request, no token
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"token_required"},"bridge_protocol":1}
{"error":{"code":"unauthorized","message":"token required"}}
--- with the token as bearer
{"ok":true,"auth":{"required":false,"authenticated":true,"via":"token","role":"drive"},"bridge_protocol":1}

Evidence: Status transitions: Starting recovers next request; tagged node revokes warm-cache grant inside TTL

=== S8: Mac wakes, tailscaled still 'Starting' -> owner asked to pair once, then recovers on the NEXT request
--- status: BackendState Starting (what tailscale status --json says right after wake)
Starting - {'7': {'LoginName': 'owner@test.ts.net'}}
--- request 1 (serve-only install, port 37619, phone shape, no login header)
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"pairing_required"},"bridge_protocol":1}
--- tailscaled reaches Running (one login, no tags) - the SAME minute, well inside the 5-minute cache TTL
--- request 2, immediately: the grant path must re-read, not answer the stale negative
{"ok":true,"auth":{"required":false,"authenticated":true,"via":"tailscale","role":"drive"},"bridge_protocol":1}
HTTP 200

=== S4: a node gets tagged while the cache is warm (Running sole -> Running with tagged peer), inside the TTL
--- request 3 (cache already proved sole login on request 2): still granted
{"ok":true,"auth":{"required":false,"authenticated":true,"via":"tailscale","role":"drive"},"bridge_protocol":1}
--- a tagged node joins the tailnet (status flips; still well inside the 5-minute TTL)
--- request 4, immediately: the warm cache must NOT keep granting; the no-login request pairs again
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"pairing_required"},"bridge_protocol":1}
HTTP 401

Evidence: After pairing a device (gate closed) the owner's phone still gets in; strangers still pair

=== S9: pair a device first (closing the gate for strangers), then re-check the owner's phone
--- POST /api/devices/pair/start from this PC (localhost, local access)
{"code":"584600","expires_at":"2026-10-06T14:59:46.697Z"}
--- POST /api/devices/pair with code 584600 (as a stranger's device would)
HTTP 204 (device cookie set)
--- owner's phone after the gate closed (no cookie, no token, serve-only install)
{"ok":true,"auth":{"required":false,"authenticated":true,"via":"tailscale","role":"drive"},"bridge_protocol":1}
HTTP 200
--- stranger-shaped serve request after the gate closed
{"ok":true,"auth":{"required":true,"authenticated":false,"reason":"pairing_required"},"bridge_protocol":1}

Pipeline

Updates from git push no-mistakes

✅ **intent** - passed

✅ No issues found.

🔧 **Rebase** - 1 issue found → auto-fixed ✅

• ⚠️ CHANGELOG.md - merge conflict rebasing onto origin/main

🔧 Fix applied.
✅ Re-checked - no issues remain.

🔧 **Review** - 2 issues found → auto-fixed (2) ✅

• ⚠️ CHANGELOG.md:65 - The new serve-only entry sits inside the ## [0.3.52] - 2026-10-06 ### Fixed section (header at line 64), but the base commit 54e5a1f is already past the v0.3.52 release prep, and ## [Unreleased] has its own ### Fixed section at line 16. This branch's change is unreleased work attributed to a shipped version; at the next release prep it stays stranded inside the historical 0.3.52 block instead of moving with [Unreleased]. This is the previously authorized fix (recorded decision changelog-entry-under-released-0.3.52) still unapplied at this head. Remedy: move the 8-line entry (lines 65-72) up under ## [Unreleased] → ### Fixed, appended after the existing Codex entry; the PR link is added later by the pipeline's PR step.
• ℹ️ server/index.ts:1029 - The grant-path predicate token === "" && pairedDevice === null && isServeOwnerRequest(requestShape) is path-blind, so on a serve-only install every phone-shaped request — including static assets (JS/CSS/icons/sw.js), /api/health without scope, /api/auth and /api/devices/pair — awaits a fresh tailscale status --json spawn in freshIdentity (server/tailscale.ts:255-259 skips the early return only when the cache proves sole-login and the Host matches, i.e. exactly the phone's case). For non-/api/non-/ws paths the computed access is never consulted (static serving falls through; requiresAuth and the readOnly/mutating checks are all gated on /api/ or /ws), so the read adds one bounded CLI spawn plus its latency (~20-100 ms, 2.5 s worst case) to each such response on the intended happy path (first phone page load pays one spawn per asset wave) while buying nothing. Remedy: add (pathname === "/ws" || pathname.startsWith("/api/")) to the grant-path predicate — behavior-preserving for every response, since /api/* (including /api/health?scope=bridge, the one open endpoint that reports auth) and /ws are the only paths that observe access.

🔧 Fix applied.
1 warning still open:

• ⚠️ docs/guide.md:213 - The changed sentence says "Your own devices get in without a code only when you set HERDR_WEB_TAILSCALE_SERVE_ONLY=1 ... Without it, the phone pairs with a six-digit code." That contradicts the rest of the change's own documentation and the code: tailscale serve stating the owner's login already grants entry with no flag (server/access.ts:121, guide.md:259 "A login that matches this PC's own gets in", guide.md:267 "Nothing needed: your login", INSTALL.md:156-157 "Nothing to configure"). The flag exists precisely for the requests where serve states no login (the reported Tailscale 1.102.4 phone case), not as the only codeless path. A reader who takes the sentence at face value enables a security-relevant flag (full owner access for no-login proxied requests) they may not need. Siblings carrying the same "set the flag to get codeless phone access" framing: README.md:94, README.ja.md:96, README.ko.md:95, README.zh-CN.md:96. Remedy: qualify the sentences the way INSTALL.md:157 already does — your devices get in without a code when serve states your login; if your own phone is asked to pair anyway, HERDR_WEB_TAILSCALE_SERVE_ONLY=1 lets it in without a code on a one-login tailnet, enabled only when nothing else reaches the port.

🔧 Fix applied.
✅ Re-checked - no issues remain.

✅ **Test** - passed

✅ No issues found.

• Live validation: ✅ go - 9 of 9 scenarios driven live against the product

Scenario	Result	Live	Evidence
Owner's own phone opens the Tailscale URL and lands in the app immediately, no code, no pairing screen (HERDR_WEB_TAILSCALE_SERVE_ONLY=1, one-login untagged tailnet)	✅ pass	live	live-s1-owner-phone-no-code.txt (authenticated:true via:tailscale, /api/session 200) and ui-phone-serve-only-lands-in-app.png (real Chrome at the MagicDNS hostname renders the workspace, no gate, /ws…
With the flag off (the default), the same phone request gets the six-digit pairing flow, which keeps working for devices that belong to someone else	✅ pass	live	live-s2-s7-guards.txt (pairing_required, 401) and ui-phone-flag-off-pairing-screen.png ('Pair this device with a code from the PC' gate); pairing a device over /api/devices/pair succeeds (live-s9-gate…
A genuinely different Tailscale login is refused, never silently granted, even on a serve-only install	✅ pass	live	live-s2-s7-guards.txt: Tailscale-User-Login stranger@example.com -> other_user refusal on /api/health and /api/session
A tagged node appearing on the tailnet revokes the no-code grant on the next request, even from a warm cache inside the 5-minute TTL	✅ pass	live	live-s4-s8-transitions.txt: request 3 granted from warm cache, tagged peer flips the staged status, request 4 immediately pairing_required (401); server driven over live HTTP with a staged tailscale C…
After the Mac wakes with tailscaled still Starting, the owner is asked to pair at most once and the next request succeeds (no 5-minute negative-cache lockout)	✅ pass	live	live-s4-s8-transitions.txt: Starting -> pairing_required, flipped to Running -> immediate next request granted via tailscale
A rebinding page or non-serve proxy presenting its own Host gains nothing: the Host must name this PC's MagicDNS name or tailnet IP	✅ pass	live	live-s2-s7-guards.txt: Host evil.example and Host 127.0.0.1 with forwarding header -> pairing_required; the MagicDNS name and the 100.x tailnet IP both granted (live-s1-owner-phone-no-code.txt)
Funnel (public internet) stays closed even with serve-only on and the sole-login proof	✅ pass	live	live-s2-s7-guards.txt: Tailscale-Funnel-Request header -> pairing_required
A configured token is still required of everything but a paired device on a serve-only install	✅ pass	live	live-s2-s7-guards.txt: HERDR_WEB_TOKEN install -> token_required without credentials, via:token with the bearer
After the first device is paired (gate closed for strangers), the owner's phone still lands in the app without a code	✅ pass	live	live-s9-gated-owner-still-in.txt: device paired over the real pairing endpoints, then the phone-shaped request still authenticated via tailscale and /api/session 200

• HERDR_TEST_MODE=unit bun test ./server/tailscale.test.ts ./server/access.test.ts (35 pass)
• bun test ./server/api.contract.test.ts -t serve (both new serve-only contract tests pass against the isolated herdr-web-ui-test herdr session)
• Live HTTP drive, real tailscale CLI reading the machine's real one-login tailnet: phone-shaped request (loopback source, X-Forwarded-For, no Tailscale-User-Login, Host=denisss-macbook-pro-m1.tail5cc90b.ts.net) against a real bun server/index.ts instance with HERDR_WEB_TAILSCALE_SERVE_ONLY=1 -> /api/health?scope=bridge reports authenticated:true via:tailscale; /api/session 200; tailnet-IP and upper-case Host variants also granted
• Live HTTP drive, same request against a flag-off instance -> pairing_required (401 unauthorized body); stranger Tailscale-User-Login -> other_user; evil.example and 127.0.0.1 Host -> pairing_required; Tailscale-Funnel-Request header -> pairing_required; HERDR_WEB_TOKEN install -> token_required without credentials, via:token with bearer
• Live HTTP drive with a staged fake tailscale CLI on PATH: BackendState Starting -> pairing_required once, then Running sole-login -> granted on the very next request inside the 5-minute TTL; warm-cache sole-login grant -> a tagged peer appearing in status -> pairing_required immediately
• Live HTTP drive: paired a device over /api/devices/pair/start + /api/devices/pair (gate closed), then the owner's phone request still granted and stranger-shaped requests still pairing_required
• Playwright (real Chrome, host-resolver mapping the MagicDNS name to the test server, phone viewport): the app loads at http://denisss-macbook-pro-m1.tail5cc90b.ts.net:37611/ with no pairing gate and an open /ws; the same URL on the flag-off server shows the 'Pair this device with a code' gate; screenshots captured
• Cleanup verification: all four test servers stopped, herdr-web-ui-test session stopped, worktree returned to clean (transient .nm-test, dist, .playwright artifacts removed), captain's live install on 7317 verified healthy

✅ **Document** - passed

✅ No issues found.

✅ **Lint** - passed

✅ No issues found.

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📝 Summary

Summary by CodeRabbit

• New Features
  • Added an opt-in way to access the app through Tailscale Serve without pairing when the tailnet has a single login, no tagged nodes, and no other route exposes the app.
• Security
  • Other logins, Funnel traffic, mismatched hosts, and requests through other routes remain restricted. Pairing and configured-token requirements continue to apply where applicable.
• Documentation
  • Updated setup guidance with the access conditions and precautions for enabling this option.

Walkthrough

When HERDR_WEB_TAILSCALE_SERVE_ONLY=1 is enabled, a no-login Tailscale Serve request can be admitted for an untagged, single-login tailnet if its Host identifies this node. The change adds tailnet identity checks and caching, access-decision wiring, tests, and setup guidance.

Changes

Tailscale Serve owner access

Layer / File(s)	Summary
Tailnet identity proof and refresh server/tailscale.ts, server/tailscale.test.ts	Parses local and peer status to establish whether one untagged login owns the tailnet. Adds cached and fresh identity reads, with tests for parsing, refresh, and concurrent reads.
Access decision and request wiring server/access.ts, server/index.ts, server/access.test.ts, server/api.contract.test.ts	Validates request Hosts and adds the Serve-only owner access rule. The server supplies request and identity details to access decisions. Tests cover accepted and rejected requests, including changed tagged-node status.
Access behavior documentation shared/protocol.ts, server/AGENTS.md, docs/guide.md, INSTALL.md, README.*, CHANGELOG.md	Documents the Serve-only setting, access conditions, and limits in the protocol comment, setup guidance, configuration table, and changelog.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

Suggested reviewers: devswha

Merge Risk: 🔵 Low · up to de69f

With the opt-in setting enabled, each request from the owner's device through Tailscale Serve may wait on a Tailscale status check, which adds some latency. Behavior is unchanged when the setting is off. This is acceptable with owner awareness, or it can be followed up by caching the positive proof.

Security Architecture Review

Security architecture risk: 🔵 Low · up to badd3

The exception is disabled by default and preserves token, pairing, host, and public-ingress restrictions. No introduced authorization bypass was established. Its safety nevertheless depends on trusted ingress and on visibility of every device that can reach the service; those deployment guarantees remain unconfirmed.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — If owner inference were incorrect, the exposure would exceed this browser session: drive access reaches terminal control, readable host files, device-pairing administration, and configured remote-machine routes. Remote requests inherit server-held endpoint tokens. This is authority available to the serving user and configured connections, not demonstrated access to every tailnet host or operating-system administrator privilege.

Trust Boundaries and Controls

• observed — The new path rejects non-loopback requests, reported foreign logins, Funnel-marked requests, mismatched Hosts, and listed foreign or tagged peers. Token and paired-device decisions precede it. Existing same-origin controls still protect API mutations and WebSocket upgrades; device and remote-machine mutations also require their custom request header.
• inferred — The decisive unresolved dependency is whether every foreign or tagged device able to reach this Serve listener appears in the status evidence used for the grant. The guide asserts that hidden devices cannot reach Serve, but no independent dependency contract or production topology was supplied. Incompleteness of the whole tailnet inventory alone does not demonstrate an attack.

Resilience and Maintainability Implications

• observed — Ordinary login-header authorization can still consume cached owner information while refreshing, and failed status reads can retain that owner. The base already had this behavior. The new no-login grant separately requires refreshed positive sole-login evidence, so legacy stale-owner behavior is not treated as an introduced regression.

Hardening Proposals

• proposed — Before relying on the exception operationally, validate and record the reachable-peer visibility and Serve header guarantees for shared devices, ACL changes, tags, and daemon transitions. Keep token or explicit pairing authorization wherever exclusive trusted ingress cannot be assured.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: allowing the owner’s device through Tailscale Serve without pairing.
Description check	✅ Passed	The description explains the problem and resulting behavior under “Intent” and “What Changed,” and reports relevant unit, contract, and live validation under “Testing.” It covers the template’s requir…
Docstring Coverage	✅ Passed	Docstring coverage is 85.71% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 14 functions across 7 files. (1 skipped: 1 …
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Inline comments:
Review comments at @server/tailscale.ts:
- Around line 256-260: Update `freshIdentity` to reuse a settled positive proof
for the matching host while it is within a short freshness window, using the
cache timestamp; otherwise continue to call `refresh()`. Preserve immediate
refreshes after failed or unsettled reads and the existing denial behavior for
tagged or multiple-login results.

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• CHANGELOG.md
• docs/guide.md
• server/index.ts
• server/tailscale.ts

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• CHANGELOG.md

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